It wasn't directed at you at all, but at the "if you're good you'll eventually get out of the 30/40s alone" crowd. You started at 66 and went as "low" as 62, you have never experienced what it's like to be in the actual low levels solo queue.
Tbh, nowadays it actually IS easy to get out of the 40s. When skill rating gain was still bugged (like you would get NO rank if someone on the enemy team left but still lost a fuckload if someone on yours did) I fell from 52 to 37. Just got to 54 now and I barely lose any rank when I lose because of the internal MMR.
Like I'd win on rank 41 and gain almost a whole rank. I'd lose on 42 and lose maybe 10% if that.
It still sucks that I had to climb out of that pit because I get your point. If I had STARTED at 60, I'd probably not have fallen that low because people would have played better in general and there would be less leavers/ad players, enabling me to do what I did the past week from the beginning instead of just now.
But going from 62 to top 500 in solo queue is still an amazing accomplishment. I don't think I would've been able to do it even if it wasn't bugged in the beginning, but I might have made it to 65+ at least.