Just my two cent's worth, but I have an eight round mag that came with my Kimber in 1997. It has been in constant use since then in matches twice a month and as a carry gun. I've never replaced the spring or the follower. It still works great. BTW, it was made by MecGar.
I only use eight and 10-round mags anymore. But, I keep a stash of followers and springs. As soon as I notice something suspicious the mag gets a new follower and spring.
I average about one FTF or FTE per year and shoot 10,000 to 12,000 rounds a year.
JMHO, it is a non-issue...