There have been some rumours circulating that Disneyland Paris will not open at all this year. I just want to share that it's easy enough to check these rumours if you simply try and book for Disneyland Paris directly with them - right now I can book a hotel stay and entry to the park for April 25th 2021. If there was any chance at all that DLP knew it would not be able to open it would not be selling tickets and hotel stays, they would have made the decision to reduce the staff and resources and stop taking bookings.
Nobody knows how the French laws will move for the summer as yet and if Disneyland can open it will. There is no point speculating and reposting random vloggers opinions, especially when it is so easy to fact check. So for now DLP plan to open on April 25th, that will likely be pushed back but the intention is to open as soon as possible.