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.
P2PKH P2SH benefit features on the bitcoin network.
P2WPKH P2TR benefit gateway transactions /locks which other networks want as their 'pegs'
using real logic. if LN was bitcoin layer 2, something worthy of being called a bitcoin feature.
it would be something only bitcoin can have and use. something unique to bitcoin.
also LN would be the code that would change to fit bitcoin.. where LN would have to fit bitcoin because its part of bitcoin.
but thats not the case.
LN is its own network for multi crypto. its not a bitcoin layer two (hinting that its unique/solely part of bitcoin, for only the benefit of bitcoin)
EG
visacard is not 'dollar' .. visa is a multi currency payment system
visacard is not 'L2Dollar'.. visa is completely different then the dollar payment network.
yes you can settle your visa balance at an ATM by requesting and getting authorisation of a 'cash advance' but thats more about the ATM and the bank authorisation, not a simple "plastic card is a bank note" misrepresentation