He's definitely having a string of bad luck. I've seen that happen to a few people who finally gave up their 72MHz radios. One of the downsides of 2.4GHz is the short antenna and no frequency flag which was a great wind sock and good reminder to put your antenna up.

I fly several radios on both frequencies and there's a couple of times I almost did the same thing. I always keep the frequency flag on my 72MHz radios and have made it a habit during my pre take-off check to make sure I reach down to check antenna position on all my radios. That way I'll feel the flag if the antenna is down on a 72MHz radios, or check the antenna position on my 2.4GHz radios.

Hogflyer