I couldn't agree more with this.
I'm pretty sure the main reason I like the Doctor / River so much is because Alex Kingston was so brilliant in the role (the fact she's also a Pertwee person is merely a bonus). Otherwise, the other 'ships / potential 'ships have left me cold. (The fact I find 'shipping in general - with a handful of exceptions - pretty ridiculous doesn't help.) Rose went from an actual person to a simpering idiot. Martha was a non-person who spent most of her time whining that the Doctor didn't love her. Clara was monumentally self-centred and selfish beyond belief. Now Yaz. At least Donna bucked the trend but her reward was to be completely mind-wiped. It's a really, really poor record. Each to their own but IMO classic Who was much more interesting and diverse.
Made me giggle when they advertised a River Song book over the credits. Because there’s naff all from this era to sell.