Basically the opposite has happened. Not only has every API either been removed or restricted. Every company is investing a lot of resources in making their platforms impossible to automate even with browser automation tools.

Mix of open platforms facing immense abuse from bad actors, and companies realising their platform has more value closed. Reddit for example doesn't want you scraping their site to train AIs when they could sell you that data. And they certainly don't want bots spamming up the platform when they could sell you ad space.