It’s always android users complaining about this. Why should Apple care if its users don’t?
I’m an iOS user and I use iMessage with some people, discord with some people, telegram with some people and Skype with some people and it doesn’t bother me in the slightest to do so. It’s not even cumbersome to do so, the contacts show up on the same share screen regardless of platform.
If the people you are communicating with don’t care enough to send something to you in a format that works for you, that’s on them, not on Apple.
Demanding that Apple make an app for android so that you can use their service without paying for their product reeks of entitlement though.