AF is a time-tested and respected firm and has been around for many decades. My weak understanding is that they do not advertise - and I respect that a lot.
When I was in your shoes (employer only offered AF with similar fees), I was so appalled that I invested next to nothing, only enough to get the match and when I left that employer, I breathed a sigh of relief and transferred it to Fidelity (where I was enrolled in a plan through my new employer).
I am grateful to AF though for motivating me to find better investment alternatives - and for that, I owe AF a lot and am eternally grateful. The rep I dealt with was top notch: warm, friendly, super helpful - until I decided to not purchase life and disability insurance through them (NWM) - then radio silence.
As alluded to in an earlier post about 10% returns last year, that's great, but low-cost funds at Vanguard last year earned me 24 to 33% with expense ratios averaging around 0.10. Beware of my declaration here because past performance has no reflection on future performance and I have given only an internet anecdote, but it's something to ponder.
If you sense that I am being diplomatic, it is only because I do not want this site, or its owner, to become embroiled in yet another potential lawsuit about unfounded claims by posters.
For endless advice about your situation, I highly recommend checking out bogleheads.org. First, do a search there on AF then open your mind to a whole new set of possibilities.