This is either a troll or just plain internet rudeness of not bothering to review a few posts back before posting. BC we had this exact discussion w Rooster1 recently and he apologized.
As I suspect you already know, full sell outs of TBA for the LVs happened, but were uncommon even in the Pat days. I remember it happening just a handful of times, mostly around the UConn rivalry.
Surprisingly, attendance (actual, not announced tix sales which mean nothing) hasn't changed much at all the last few years and stays at the same level this year. They'll get about 7-8K actual butts in seats for a week night SEC game, around 9ish for a weekend SEC game, and around 12-15 for a "big game". I suspect that's exactly what they'll get for SC Monday evening.
No that's not near a sell out, and yes those #s will amp up a few thousand when the LVs start to be championship contenders again. While it's not what SC gets, if you look at the near empty arenas around the SEC, lucky to get a thousand friends and family, it's pretty dang good, esp considering the struggles of the last decade.
Oddly, one thing that hurts LV attendance (and conversely helps SC women's) is the men's team. SC's women easily out draw their meh men's team, but the men Vols sell out TBA for the most rouutine mid week SEC games. And those tix are super expensive. I think alot of Vol fans make a choice - one but not both.