I'm guessing after the Pike Series, they'll do a Kirk Series. So whoever they cast as Kirk will potentially have a job he can always count on until about 2030. And Ethan Peck is looking at the possibility of two series back-to-back.
Possibly. It'll be interesting either way.
I've been a fan since 1991. Even back then, I heard "Kirk's a womanizer!" leveled against him. This isn't a recent thing.
I could opine two possibilities from that:
1. Kirk did go at it with guys but then later decided he preferred only women and not looking back... (never mind Spock and all that slashfic, who probably told him a "forget it" grip after his previous pon farr, why not)
2. In TOS Kirk still does but he was never asking about men... apart from "That Which Survives", though he might have been asking in case Losira already had a boyfriend before following up with her knowledge of love and what fun and happiness people can have together (e.g. "The Apple" of all stories, et al) - that could go either way, pardon the puns...

or 3, why not: He never was outside of third party unauthorized sources making slashfic and now it's being integrated since none of us wants to see Kirk hitch up with a hot dog toaster... it's actually a real thing:
https://en.wikipedia.org/wiki/File:Hot_Dog_Toaster.jpg
But in all honesty, it's not too wild a shoehorned revelation despite seventy nine 50-minute mini-documentaries.