Back in 1962,the 7 Rem Mag squished the 264 Win Mag, the 280 Remington (the 280AI was around but no one paid any attention),and who knows what else.
Even my favorite 7mm Mashburn never saw the light of day because of it.
Thoroughly field tested on all North American BG animals for several years before introduction;not invented on some engineers drawing board.
The reason given for wiping out the others was heavier bullets and higher velocities and that sold to the public in a big way. Wiped out the others overnight .
Bullets and scopes have gotten mo better.....the cartridge is Top Ten for BG worldwide. What's not to like?
Conversations about neophytes who can's shoot are silly nonsense. Make a cartridge popular and it will eventually end up in the hands of people who cant shoot. Look at how many dopes lug a 30/06.....