A lot of these things seem to be in the past tense. I think they are just regurgitation of the things that had happened earlier in the year. I couldn't see anywhere in the article were they say the problems are on-going. It is all past tense.
There was an article about a month ago (same newspaper) that said these were all problems in the early and middle part of the season but that Embiid had turned a corner and that Coach Brett Brown was now happy with how Embiid was taking things more seriously. That there was a problem in the past. That has been addressed. That things were going better now.
At least ... that is how the article came across to me.
My understanding is that the linked article was the first time that someone from the Sixers acknowledged that there were issues with Embiid and that there were Sixer fans who had denied the claims as a result. Apparently Embiid has turned a corner of sorts now that he's been allowed to work out, but there remains a legitimate question about his maturity and dedication to the game nonetheless.
Based on I have read, it's clear that he has rare physical talent and I was on the bandwagon early last year. However, he needs a lot of work to transform that talent into NBA skills. I'd be surprised that he ever achieves the level of guys like LBJ, Kobe, Duncan, and KG and dozens of others who are/were franchise makers. Those guys were driven personalities. I don't get that sense about Embiid in this article or in other things I've read.
There's also the medical risk with his feet and back that will play out one way or the other over time, but there's not much he can do about that even if he becomes dedicated to conditioning. A lot of players take a while to get on the conditioning/diet bandwagon, but he has less room for delay given his history (so did Sully who at the very least appears to have ate his way out of a more lucrative contract).