What's going on? Who's after Luke now??
it's a bit complex and nobody is after him this time

google "OP_RETURN limit Todd" or so
long story short... it seems that certain interest groups (including and allegedly led by Jameson Lopp who started a company that would benefit) are pushing on bitcoin core developers to merge the change of certain parameters which would improve the implementation of non-monetary use-cases on bitcoin blockchain (like NFTs, inscriptions, runes... in general data storage)
at this moment it's about the lates pull requests by Peter Todd that basically removes current size limit on OP_RETURN - this would have consequences in the size of blockchain, fees, block space scarcity and impact on the resources necessary for running a node and hence the level of decentralization
the Ocean/Knots gang is against (same as before) and quite vocal about it as usual... which lead to a ban of Luke, Mechanic and some others from the bitcoin core github which is something unprecedented and many heavy weights from the bitcoin space are not happy about it
for now it seems that the reputation of Lopp will take a hit, many supporters of bitcoin core devs are pulling back and the bitcoin knots implementation (alternative bitcoin node software forked by the "opposition") is gaining bigger share
it's way more complicated on a philosophical level though