Well both your reply and the above 'replier' have simply attacked my comment ad-hominem, and have not provided any basis for your arguments.
I don't think it adds anything to the argument to indicate "People who say such and such just want to do this or that"
That 'a lot of films could not get made' is not a controversial idea - have a listen to Hollywood podcasts.
Granted, a lot of the 'can't get made' memes are directed at issues such as 'market size' and geopolitics (i.e. China market), there's no shortage of films that have suffered consequences due to nearly arbitrary issues over race, gender etc. - and these were the films that were approved.
"Scarlett Johansson is again at the center of a casting controversy, this time for accepting a role to play a transgender man. " [1]
"Taika Waititi Teases ‘Akira’ Film Adaptation, Says No One Has to Worry About Whitewashing" [2]
"Cloud Atlas under fire for casting white actors in 'yellowface' makeup" [3]
Literally a film made by two hyper-progressive transgender women, 'under fire' for casting people of different ethnicities and genders, in different roles entirely to make a point about such things, faces controversy.
These various movements represent serious restrictions to artistic creativity and freedom of expression in the arts, and it's had a chilling effect on the industry.
The studios have 'taken note' - and now there are an entire series of stories and characters removed from pop culture reference, due to the antagonizing of a fairly small number of individuals.
Twitter has become a tool of mass suppression, whereby a few angry people can often dictate 'what cannot be done'.
The effect is pronounced and significant, affecting casting decisions in most films made in Hollywood.
Consider that in 2019 there was no host for the Oscars - largely because nobody wants to step up to the plate and undergo the kind of scrutiny usually reserved for presidential candidates. Any public statement ever made, in any context, that runs afoul of one group or another, can have one permanently removed - I'm not defending terrible people like Bryan Singer (X-Men), rather, guys like James Gunn (Guardians of the Galaxy), who made some really tasteless jokes on Twitter and lost his job (though thankfully regained).
Finally, on a side note, I'll refer to John Cleese himself during a Marc Maron interview (you can search iTunes for it, highly recommended): "You can't make a joke about the French Revolution anymore". I understand this isn't quite a concern over sensitivities, but Cleese himself pokes in this direction in his interviews.
Frankly, I find your evidence that this era is "weirdly intolerant" to be completely lacking. That some random advocacy group managed to get a couple of lines into the Guardian about a movie means nothing; the fact is that it got nominated for a bunch of awards, and the sisters got an even bigger budget for their next one. Talk about a chilling effect!
As for public statements, we just didn't use to be able to publish whatever crap came to our brains at 3am on the toilet to millions of people. Broadcasting was a Big Deal, only made after careful preparation. The difference is Twitter, not the reactions.
Yes, there are still taboos and stuff you can't say freely. But worse than before? I'm not seeing it. And Cleese provides no more evidence than you.
There where also the massive nerd-rage directed towards the Ghostbusters remake with all-female main characters. I don't think this means we won't see gender-flipped remakes ever again. It just shows that with the internet every complainer has a voice.
I think that's a common meme which is spread uncritically by people who want to denigrate the current age.