All of these are good things if you can afford them. The problem is not that people do them, but that people who cant’ afford them feel they have to, that they can’t do without them. Now we’ve all learned how to do without certain luxuries that we never imagined we could. When this is over, those who can afford those luxuries will probably resume them, but those who can’t, and only indulged because they couldn’t imagine any other way, will now be able to reconsider them.
And even those who can afford everything may have surprised themselves with how little they missed some things. Maybe next year some people will choose to make their own Pesach, with guests, because now they know they can do it. Maybe they went away every year, not because they really wanted to, but because they were afraid of trying to do it themselves. Now they know it’s not so scary, they may do it again.