Given the options of even home cast lead bullets being coated these days, it would be hard to argue against that logic.
On the other hand, like so many things with guns and the Internet, the risks are probably greatly overstated. Both from the likelihood of a leading even causing a kaboom and also what happens if it did.
Until the latest coatings became more common recently, I have shot bare lead in all my Glocks (I never warmed up to moly coated, back in the day). As I recounted, I have seen massive and unique to the polygonal barrel leading just once. This was with an overbook load of 45 Super from my G21. The results did get my attention as it was the worst leading I have seen in any barrel, it did go from almost zero to something that resembled lava flow in one rung of my test ladder. All the while, the 1911 next to it had almost none on the exact same load. While you could see light through the bore, it was not round and the hole much smaller than 45 caliber. Yet, with this leading, I didn't get a kaboom, what I got was bullets that flew wildly, far worse than any unstablized load I have seen. This is what caused me to stop and look. Would the next round have kaboomed? Perhaps, but I wasn't getting smiled cases or any other massive sign of over pressure, so I frankly can't say.
It is my strong conviction that when it comes to kabooms, people will find all sorts of extravagent rationalizations to explain away a simple overcharge or serious bullet setback while using a fast pistol powder. Things like "unsupported chambers", 40 caliber "pressure spikes", under charge "powder flashover", "polygonal leading" leading to over pressure kabooms, etc. IME, there is no end to these things being conflated to assuage an otherwise cracked ego. For whatever reason, there has always seemed to be an inordinate percentage of overbearing egos in the gun community, egos that will go to the ends of the earth to avoid admitting they might have screwed up, or didn't know what they were doing.
But hey, I have only been reloading since 1968, so I will freely admit, I haven't seen everything.
In the end, if you want the benefits of shooting lead from your OEM barreled Glock, coated is a terrific option most casters offer at a tiny upcharge. No brainer really.
PS - While I do think coated also may provide some additional protection of the risks of vaporized lead being inhaled, notwithstanding the fact that most will still be getting their fair share of lead from the primer, anyone who has shot coated at an indoor range will tell you, it smells like somebody is painting a car in there before you get through that second quart sized zip lock baggy of rounds. Kind of makes me think that is what cancer smells like...