The way this reads is questionable in it’s application to part codes… So as far as acceptable TRANSMISSIONS from the receiving operator’s end I completely agree. The message should be decodable and open. The sender needs to be licensed and use proper radio etiquette. None of that has anything to do with the equipment making the transmission.
I do believe in self policing. If amateurs notice encrypted messages, music transmission, foul language, unlicensed operators etc., those issues need to be reported. However, you can break a lot of rules as a ham with only amateur radio equipment… part of the hobby is obeying the rules so far as bands, bandwidth, power, mode, etc. As long as all of those rules are followed, it shouldn’t matter to a receiving operator what equipment is used, provided that the equipment is designed (note that I did NOT say ‘certified’) to operate on those frequencies, bandwidths, and with power limitations acceptable for a particular service.
Part codes are not well enforced by the FCC and that’s not a ham’s responsibility imo. I mean, should I report everyone using a beofeng or other cheap Amazon purchase for spurious emissions? I agree that it’s technically not correct to use any single device for amateur, gmrs, murs, frs, and lmr, but I do not see that as part of the scope nor the spirit of your link. Part codes are designed to protect people who don’t know what they are doing from their own ignorance, for the benefit of the general public. However, it’s silly to think that a licensed amateur operator needs to use a different radio for gmrs without switchable bandwidth, and also carry a third murs radio that’s not FPP… I know that’s technically the way the law reads, but as long as all requirements of that service are met in regards to power, bandwidth, frequency, and mode, and without spurious emissions, I don’t see who’s business it is what transmitter I’m operating except the FCC’s and they have shown by their own actions that they don’t care much about enforcing that part of the code… I certainly don’t!
All this to say that I’m also not going to recommend that users operate any single device on all of the above named services, because as a beginner, you may not be aware of what I’d call ‘secondary requirements’ like acceptable bandwidth or power, but if you study the hobby, hone your skills and gain knowledge such that you can properly operate a device on a particular radio service and meet all transmission criteria, who really cares, and who SHOULD care?