Seriously what's wrong with this? If someone purchases from you with fiat via strikes fiat to lightning rail, Strike is serving as the same thing acting as a proxy to another currency.
People who use proxies with Monero do so for OPSEC reasons. I use xmrbazaar proxy sellets for Amazon for obvious reasons. You wouldn't have gotten their business either way and in this scenario you're getting more business than not.
What business is yours if the proxy seller is buying for themselves or for someone else and taking Monero from it?
I'm very curious about the backlash, they're not taking profit from you you're getting 100% of the sale. I'm open to your perspective I want to know what's offensive about it.