People love getting high on academy kids then tear them apart later once they don't fulfil their delusional expectations. With the likes of Januzaj and Greenwood, there was always special things about them and their success or failure weren't predicated on their lack of ability but rather on other things(laziness, factors outside of football, etc).
With Elanga I don't see anything special about him that should get people exited as were the case with your Januzaj or Greenwood. His actual skills aren't being highlighted when he's brought up but instead people bring up all these intangibles such as hard work, effort, etc. Honestly when such qualities are the firsts one thinks of about a player, that raises a serious red flag. We've seen this dance before, we've seen what these hard working limited players end up turning out. Your Lingard, McTomminay were all vouched for due to their hard work yet it eventually never amount to much if there aren't actual skills and talent to compliment that.
This Elanga kid hasn't shown anything special and isn't special for me to be hopeful about his prospect. He just runs and works hard. That's not quite enough. Next manager that comes through the door probably won't look at him twice.