Well, send Lightning to custodial BlueWallet or someting and forward to the actual destination

Or send money to ln.cash and give out the link.

Or send it via swap like fixedfloat.com

Sure, there's ways to avoid leaking privacy when using BTC. But this requires a deep understanding of the tradeoffs. Meanwhile XMR does privacy by default which is great for people just seeking privacy without a desire to understand tradeoffs.

Avoiding leaking privacy requires a deep understanding, period.