It may be reasonable and this is nothing but an attempt to stop the bleeding. There is no reason to trust them or their leadership again. The fact the CEO wasn't booted immediately shows they still want that style of leadership. The fact the CEO is not the one making this statement shows the fact Unity not interested to hold him accountable. They did this last year making dumb statements about monetization and then pulled this out this year. They deserve no trust and anyone that continues business with them gets what they deserve.
If they had opened with this it would have been amazing, but this being 3-4 revisions in with nothing locking them to this going forward, it's not that good a look.
Being able to choose 2.5% revenue share (half of Unreal) does not sound bad to me. And very glad they removed the retroactivity of the new fees.