Yes, but I'd always ask why they don't accept Monero directly as it is a no brainer.

Monero is the only coin that doesn't come with compliance costs for the merchant. They accept it like cash.

No expensive payment providers that need to consult chajnanalytics to potentially freeze funds or whatever shenanigans they have in mind.

In all seriousness, I only ever would recommend merchants to accept Monero and LN accompanied (maybe) by a conversion tool like Trocador offers it.

So the merchant only ever gets "clean" aka fungible digital cash that doesn't come with strings attached.

Compliance costs will fuck over any serious cryptobusiness if they don't do it right.