We can still delete some, we are not forced to validate all.
It is not just clicking on "validate all" of course.
It just make our (ok, mostly your these times ) work easier, no?

Also, two possible feature:
- Disabling that contribution feature for some users (easy to add - I just have to make small changes in the database, I plan to do that soon)
- Selecting who can validate or not, in case some admin validate without checking... but I hope it won't happen (also easy to do... but I would have to check that I made that correctly )