The thing is that in CashApp you can buy bitcoin for fiat. For Andy's audience they may be primarily interested in buying. Ideally the audience would go through the no-KYC path and you should definitely try explaining that. Reading through all ideas in #12106 gives you enough of options.
If there's no other way, then I'd suggest Strike instead of CashApp. Strike has better rate and no fees, only .2% spread. It also has better UX imho.
Good point. On a related note, where did you find out that Strike makes a .2% spread? I've been wanting to research that for all of these exchanges.