That may be true in the abstract but has not been really demonstrated in this thread.

I spent the rest of my comment detailing the ways in which everything I ever liked about Minecraft is still available—do you have anything to add in support of the idea that something has been lost, or just this abstract observation?

Available isn't the same if it's not what people are using. Especially since you had to buy them separately for so long. This is not an abstract loss.

You're still talking abstractly, though. What was actually lost, in concrete terms?

As I noted in my comment, I'm still subscribed to YouTube channels of people who are still playing on the same server with the same group (with some changes over the years, of course). I don't play Minecraft as often as I did in 2012, but that's because I have a career and a family, not because I can't. I'm now introducing my son to Minecraft Java and he's loved it every time we've played it.

I'm just not seeing the loss, and those who are bemoaning it here haven't actually pinned down what's now missing from Minecraft as a result of Bedrock (or even Microsoft in general).

It's easy enough for an adult to follow setup instructions, but the ability ability for a kid to come home and set up their own minecraft server and bring in friends is cut down a lot when you go from "just about everyone has minecraft (java)" to "just about everyone has minecraft (bedrock)". Java is still there but it's not the thing everyone already has ready to go. That's especially true for vanilla but it also increases the amount of hurdles you have to go through to set up and use a modded java install.

And before they merged ownership, the gap between casual play and a custom java server went from "some setup time" in the earlier days to to "more setup time, also more than a hundred dollars purchasing copies of java version even though everyone in the group already owns minecraft". Surely you can see the lost opportunities there.