Because your whole post referred to the last few years and the current H2H record, SEC/ACC/BE record, etc. Your whole post was about the past.
The SEC East is Florida, Kentucky, and Georgia this year. So yes it is clearly better than the most recent years, but none/majority did not refer to this current season, so why would I address that? I'm not "ignoring it" I addressed your post.
It's been down....but its been down in terms of where it was 6-10 years ago when you had Urban Meyer at Florida, Richt had a top team every year at UGA, Spurrier had SC in the top 10 every year, Pinkel came in and had some elite teams for 2 years, and James Franklin had Vandy looking great. It's down from those years...but that's just because it was soooo good for a while it looks so bad in comparison
So where has he not capitalized in the East...factually speaking
1. SC- has been down...we've beaten them 5 straight years after their last good team. Check
2.Vandy- has been average to below average since Franklin left. He's 3-1 against Derek Mason. The 2015 game was a choke job and cost us a bowl...but other than that you can call it a check.
3. Mizzou- after Pinkel's top 10 teams all graduated, we've beaten them 3 straight. Check
4. Tennessee-Butch Jones had 2 teams that ended the season ranked. He had some good teams with elite talent, he just fell apart the last year.They were finally beatable in 2017...we beat them when we could so we capitalized. Check
5. Georgia- They're an elite team pretty much every year with loads of NFL talent. The only year they were "down" was 2016 and we lost to them on a last second field goal. I don't really think this is a team that was historically down...probably the only team that wasn't historically down.
6. Florida. They have been historically down. We haven't capitalized and couldn't finish them off in 14,15, &16. But....now they look like a top team and we did beat them.
7. Miss State-Not in the East...but our permanent West opponent. They have been historically better than they have ever been....2-4 against them and probably won the 2 games they were able to win.
I would say if you go by the years....Stoops has brought UK above the middle tier programs like USCjr, Mizzou, Vandy, and made us competitive with teams like Miss State and UT. Georgia and Florida have huge recruiting/talent advantages....but we didn't capitalize on a down Florida team. Really...the only down part of the East he hasn't capitalized on has been Florida if you really look at it.