bitcoin had to change to fit LN's settlements(filtered/rounded close session contracts) .
By this logic, we should all still be using P2PK transactions, since everything that has come since (P2PKH, P2SH, P2WPKH, P2TR, etc.) represents a change to bitcoin.
However, it might be a little different if we are paying online - that 10 minutes wait can be tolerable that is assuming that you are doing things online at home maybe.
It is a non-issue when paying online. No merchant is receiving, processing, packing, and shipping your order within 10 minutes. They can wait for the first confirmation with no delay to your order.
the solution cannot be accepted by many, perhaps that matters(!?).
It doesn't. If the user or merchant in question doesn't like Lightning, then there is absolutely no requirement for them to use it. They can continue to transact on the main chain as we have always done.