I suspect it will. It makes them look behind, even from a normal person's POV - the largest "crypto" by market cap has a working L2 that a large competitor supports.

The only way they might be able to justify not supporting it is UX. It is confusing to have two forms of bitcoin, but you can quite easily demote lightning visually so that only Bitcoin power users would need to concern themselves with choosing between the two.

Thank you! Your comment reply was the catalyst for me composing this post:

TOP bitcoin story of the day? You wouldn't know by following "crypto" industry media
#17364

Kraken leveraged Lightning Labs’ node implementation, LND, due to the API interface it exposes and the extensive developer documentation the project makes available, Rochard said.

This is essentially the first of the large exchanges where LN revenues can be swept into fiat, without significant fees.

Bitfinex has had LN support for a long time, but they don't operate in the U.S., for one, and not on the bank networks like Kraken is.

As an example, here's Kraken getting closer to joining the major leagues:

Kraken Hits Key Milestone in Quest to Gain Fed Account, Equal Treatment With Traditional Banks | CoinDesk
#16562
https://www.coindesk.com/policy/2022/03/26/kraken-hits-key-milestone-in-quest-to-gain-fed-account-equal-treatment-with-traditional-banks

(BitStamp has had consumer-grade LN support, where you could deposit and withdraw to some 3rd party wallet (Zebedee) using your account username / "gamertag"), but Kraken's LN support is full deposit / withdraw, using LN invoices.)