".org" is almost the standard for all community projects, there will be huge impact if the management went wrong.
This is an incredibly awful move, I'm completely astounded that it was allowed to happen.
Why not just move to a different domain, and while your old one is still "cheap", do a redirect etc?
It completely depends on what they do, I've renewed for 10 years so I have time now, if they put the fees to >500 a year then I'll definitely move.
Do you own a domain yourself that people have been using for 10 years? You might feel differently about the ease of "just moving"
Or these project having to plonk a significant amount of money in paying for their domains rather than <insert thing which is actually useful>.