Agree with some of this but not all of it. Lennox is from the same era as Tyson, Holyfield, and Bowe and imo was the best of them all. The Klitschko brothers were really that good, there's a reason Lennox wasn't in a hurry to fight Vitali and never wanted to give Vitali the rematch in which he very well could've ended up taking the L in the 1st fight if it wasn't for the cut on Vitali.
NBA and NFL are definitely leagues where size are at a premium so usually this only applies to the guys that are at HW, CW and maybe the big LHWs. I actually would say more big dudes should look into the boxing route now with as lucrative as it is now being a HW boxer, probably have around 20 HW boxers that earn at least 7 figures a year and super lucrative at the top with AJ probably earning $100 mil in 2019. Also, boxing is a real hood sport, has the highest % from the worst impoverished backgrounds, whether its american hoods, council estates in england, slums in eastern europe, asia etc. I've posted another thread here with articles that have said Basketball is no longer a hood sport, most of the kids in recent times don't come from low socioeconomic backgrounds and it has become more of a club sport for upper middle class kids and also sons of pro athletes whether their dads were pro basketball, football, baseball players etc. This CTE thing for football will only stop kids that come from affluent backgrounds in Coastal cities from entering the talent pool, big kids from the hood or rural areas are still going to go into it hoping to make it out with NFL dreams. The Brits and Eastern Euros have had the best talent in recent years now in the HW/CW/LHW divisions. There aren't really many other sports in the UK that the big dudes with physicality would go to besides boxing, I mean there's Rugby but that's not that lucrative and MMA is less popular and lucrative. For the Eastern Euros, there's NHL/Hockey that get some of the big dudes with talent, there's also some that go to MMA, Kickboxing, Bobsledding but those aren't as lucrative.