How does, “people who have no business SCUBA diving a protected reef due to lack of fitness” strike you?

As with eBikes, just about anyone could strap on a SCUBA and visit places they otherwise couldn’t (IMO shouldn’t).

The fact is, some people are unfit. Whether, physically, or simply lack the ability to be a good steward of public resources. This applies to SCUBA, eBikes, Driving and a bunch of other things. I don’t think that’s objectionable.