Kevin has always been known for being able to put size on quickly but that was also with gear and ect during his show days.
Him saying hes clean now , does take away from your opinion on whether its possible or not , but you still have to remember kevin started at what like 205 , and has ALOT of muscle memory to bounce back from. Thats going to greatly improve his initial gains.
Hes a legend , hes not marketing anything , hes not doing any advertising , so theres no possible arguement for a reason of why he would be lying , while in fact it is possible that these gains are 100% natural , but you just have to trust the legend.
The only feasible reason of him being on gear and saying he isnt is because he doesnt want to disappoint his fans since he said he was going to do it clean , or hes trying to even more securingly lock in his place in the minds of people of him being a genetic wonder.
But hes not competing or any plans on competing , so he doesnt have ANY stress competition wise , which enables a less catabolism state , with a huge muscle memory bank to tap into.
Me im just going to sit back , follow the journey and be impressed with the gains and have fun on the way. Whether hes truly clean or not , it doesnt affect my life so I see no fault , just use him as a source of inspiration , motivation , and dedication.