You can use a community instance as pointed out by other authors. It’s a pity that they make this change, but still we should be grateful for this open source product that can be hosted by other providers.
Up to 4 ppl, you can use brave talk. For more, use https://meet.calyx.net/ or https://framatalk.org/
This can just be a bad joke. Xmpp is not event considered by PG as an alternative. Besides, as long as you encrypt the data it does not matter on AWS or somewhere else.