This is not about herd mentality but about not ignoring very real and tangible trends in the market that are starting to affect Toyota's core business in very real ways. Mumbling about hydrogen and vaguely asserting there might be some EVs in the distant future is no longer good enough as a plan. And as a stop gap solution, hybrids are not growing as fast as EVs and mostly at the cost of ICE vehicles. Which means an overall decline for Toyota. Hybrids are no longer good enough and might be banned from key markets entirely along with ICE vehicles on a time line that is getting uncomfortably close for Toyota.
That's the reason for the change of leadership at Toyota. This stuff is starting to make share holders very nervous.
EV's are still inferior products for many users. EV Advocates like to point to fast acceleration as somehow proof they are superior. But what they leave out is that every time you accelerate you see the charge capacity noticeably drop to significant degree. On extended trips, EV drivers will be making conscious efforts to engage in slower more moderate driving. Some people are fine with it, but the fact that many choose to go back to ICE vehicles should not be ignored.