Why do people seem to think Shaw is the next coming of Alves?
He never looked threatening. His attacking play improved last season against Brugge last season, but Depay looked like Ronaldo that game. He was known more for the defensive side. I don't recall him ever running at players.
Van Gaal had doubts about his shape and attacking play as soon as he arrived. We were linked with Ricardo Rodriguez and people were wondering why.
I think that what happened was that (before he got injured last season) he had a few good games. People thought that this was Shaw's "normal" level, which means that he would eventually go on to improve further.
This was logically sound.
Here's where the logic broke down.
After his injury, fans started believing that Shaw was the single reason why we could not dominate games and had he not got injured we'd have won the title (I had a few debates over this last season and could not believe what I was reading).
In some people's heads, Shaw won the Ball on dor, when in reality he was merely a good youth prospect, who had a good run (of 7-odd) games.
Now that he has recovered from injury and is getting games, those same fans are now finding that he isn't actually the best LB on the planet, but is merely a good youth prospect.
Of course, those same fans are very disappointed that he is just "good", not "great" and this is why he is coming under flack.
IMO, after he loses some weight and plays more games, he will improve and still may become one of the best LBs, however, it may be a few years before we see this - LBs don't tend to peak at age 20.
For this reason, I actually think that he is doing "okay"; certainly not bad for a 20 year old, who has played very few games for the last 2 seasons.