This is a dumb move by Ludia. You do not penalise lower level players just cos they are lower levels.
It should be according to contributions towards the alliance missions. If you do not contribute then you get less. Very much less.
If you contribute a certain amount /percentage, then you get that equivalent amount (whatever it may be) I think @arugono suggested some possible rewards system. It’s a good start. Though I would lower alliance rewards for those who contributed zilch (0), as only getting 25%.
Seriously Ludia who in the wide world came up with this “brilliant” idea. Was it an intern trying to score points? Or just some disgruntled employees who has a beef with lower level players?