No centralization is good or "the best kind".
My point is that every time openly talks about how terrible someone else's solution is, they ignore their own. There are flaws in all of them and they all lead to some kind of centralisation.
That's the light people should be viewing this in.
BU's increased amount of data on the blockchain means that running full nodes would become impractical for ordinary users as the amount of Bitcoin transactions would increase much faster than how much data Bitcoin users are willing to download to run a full node.
The blockchain isn't going to skyrocket in size or have way more transactions overnight.
The amount of transactions on the network has been steadily rising for a long time. If transactions are more convenient, the transaction volume will rise faster. If it's on the LN it won't result in it being harder to run full nodes, but the LN's transactions themselves are centralised.