Thoughts? My friend is seeing a guy who’s 11 years older

My friend is seeing a guy that is 11 years older and the other reason why I think this age gap is really weird is because she just turned 18 and he is 29…. I have not met the guy but I personally believe that that big of an age gap especially since she is freshly 18 and he is 29 that there is a big difference in stages of their life. I am 22 and we are aren’t that far away in age but we’re also in different stages of our life which is completely different I can drink she cannot and things like that. At 29 I feel like your life is basically put together and you’ve been there done that experienced a lot not to mention he also has a six year old child.