Chrome was updated September 11
Matrix Element Desktop updated September 15, without a changelog or advisory. (The Element update on September 13 did not include the updated electron with the fix; today’s update does, according to their announcement on Matrix.)
Many/most electron apps don’t receive timely security updates, so if you don’t want arbitrary images to be able to get code execution you might want to stop using them.
Well this was a 150 € phone when new so that’s a pretty different category than what you’re looking at. I wouldn’t be surprised if 32b was still a thing in the cheap Chinese phones.
If I ever get a chance to replace it, it will be extremely tough because it has a bunch of things which are indispensable for me that newer models simply don’t have.
What kind of stuff are you looking for?