I hadn't really considered it much... Since I'm nowhere near 6 months having the vaccine, I haven't really looked at boosters. My wife got hers starting back in Dec/Jan timeframe, so it's potentially more meaningful for her now.
I will say that if someone's jumping the line, I don't really blame them as it's not like we're so constrained on vaccine availability that they're taking it from someone who wants it...
...but they should be paying for it. It is currently considered an unapproved and not yet determined to be medically necessary shot. That shouldn't be funded by the US Government nor should insurance companies foot the bill for it.
I'll bet if a lot of these people knew they'd get, say, a $100 bill for the shot after the fact, they might change their tune.