This isn't a good argument. I did move most of my social activity off X on to other platforms, but despite months of effort I had little luck persuading other people to do the same.

It's not because they love Musk, the network effects are just too strong. Media companies mostly set up Bluesky accounts, for example, but they get a fraction of the traffic there. Many elected officials just stayed on X, or if they set up accounts on other platforms they underused or abandoned those which did not get a lot of traffic. World leaders are all still on X. I think it's foolish to blame individual users for 'not leaving hard enough' when all but a very few of them have too little influence to overcome the 'gravity' of the market leader.