Most baseless accusations I've seen here so far. Numbering your silly points doesn't increase their validity whatsoever.
1. That's just a history lesson. Defending the MW title 5 times and then losing it can by no means be considered getting 'exposed'.
2. He's actually 0-1 against kickboxers in MMA, since that is what you're referring to.
3. Stupidest point of the bunch. If a fighter happens to be the tallest at a weight, how in the world is it his fault that he has a height and reach advantage. That is an absolutely irrelevant statistic. Relevant is if he's able to win fights. Izzy is, or at the very least was, able to win fights. That's the only thing that matters. Smaller fighters can lose fights, too. Guess that hasn't crossed your mind huh.
Also since you brought it up and apparently do not know, P4P literally means 'pound for pound'. Height and reach are measures of length. Pound is a unit to measure weight.
4. Great point. Joke. You can not blame a fighter for the lack of competition in his weight class. To be the best you gotta beat the best, and if the best are a bunch of second class wrestlers, then it is what it is. Until someone better comes around. But until then that's just pointless trash talk. It's literally the exact same thing as the critique on Islam's and Khabib's striking. Lack of striking ability this, lack of striking ability that. Being the best in the world in one field is a benefit, not a guarantee. Only time will tell.