...Which is exactly how they would look like if they
were the illusion casting superpsi puppet masters who control the Federation!
And what makes them different than the Romulans if they were once the same race?
For all we know, they were different races to begin with. Perhaps Romulans were driven out of Vulcan on racist grounds? This could have various nuances.
Romulans could be a race in the sense that anybody who had the facial ridges was a Romulan by biological designation. Or Romulans could be a political party, with most of the members coming from the ridge-faced race for reason X.
Perhaps the race in the majority in the Romulan political party was inherently less capable of telepathy and more violent, and thus flocked together to oppose Surak - and when Surak's side won the big war, Romulans and (in a moment of racist excess) anybody who looked like Romulans had to leave.
Or perhaps the ridgeheads just happened to live in those regions of Vulcan that were on the losing side in the war for the usual reasons unrelated to their political views or biological nature - tactically disadvantageous starting position for offense or defense, poor in raw materials, hemmed in by enemy territory, etc.
To be sure, we don't know if Surak's winners evicted the Romulans or if they decided to leave on their own. We only have vague hints that the departure took place around the time of the last big war, with Romulans as one major combatant group "marching under the raptor's wings" while others supposedly marched against them under other banners. Surak apparently died before the war in his name was concluded; his disciples might have proceeded with things Surak would never have wanted (indeed, the final war may have been one of those, although no doubt Surak could have logically argued that the best way to pacifism is the nuking of the opposition, and those at the trigger could well have listened, even if with half a pointy ear).
Or perhaps the Romulans had already left before they were (self-?)evicted. That is, perhaps being Romulan was defined by being an interplanetary or interstellar colonist of Vulcan - and these "spacers" lost their original motherworld to the Surakists but continued life in deep space. Indeed, it's possible that there were Romulans on Vulcan even after Romulans had settled Romulus and Remus, and the schism only developed when Romulus and Remus began to gain in influence within the Vulcan Star Empire.
It's good to realize that in this respect, speculation is basically all we have. Onscreen material doesn't really help us nail down what happened those two millennia before the show, and why.
The issue of Vulcan telepathy is a bit better defined - but strangely contradictory. Vulcan telepathy spans interstellar distances, yet individual Vulcans appear to be touch telepaths. Is the appearance due to biological limitations, or do Vulcans hold back telepathy just like they hold back emotion? The latter interpretation gets lots of indirect support. Telepathy for Vulcans is sex, and they have strong taboos about sex. Vulcans almost gave up telepathy at one point, as per ENT "Fusion", considering mind melds too dirty to be done even in private. Who knows what they are still holding back, not being the most easygoing folks even in the TNG era...
Romulans might be skilled telepaths all, too - but abstaining for equally perverse reasons of theirs. Certainly they appreciate interstellar telepathy, as per the ENT storyline where they exploit the Aenar. If their biology allowed them to use this skill by themselves, this path would probably have been taken in the storyline. So either Romulans have poorer interstellar telepathy skills than Vulcans, or then both have the same skills but they are not under conscious control and are only capable of these vague "Alderaan is gone!" type "messages".
Certainly the issue is far less clear-cut than mere sticking to classic TOS claims or Memory Alpha articles would suggest.
Timo Saloniemi