But Signal is better than Signal over these bridges, and it's easy too. Just because you don't want to run your own service doesn't mean you have to choose a poor option over a pretty good one.
But not everyone I talk to is on Signal. And I don't want to remember which app to open to message a certain person.
What's the difference between Element offering these bridges, people deploying their own bridges or others having 3rd party clients that you can't trust with your E2E encryption?
Nothing makes that better, you're right. I prefer to just remember who uses what and act accordingly, but you choose convenience instead — and both are reasonable choices.