Seems you do not understand all the glitches that people are taking advantage of because of ability to go in and out of clans at will ... well now at least you do have to stay in a clan for 24 hours but that has disadvantages also (can't be kicked if they are sabotaging the clan, can't go to a few clans in a day to make equipment).

Some of the problems happening now and the "hurting" that is going on is things like ...

A bunch of people can leave a clan at the beginning of the 3rd day before cvc and then rejoin the clan at the end of the third day and then that clan who may have been like 200B influence can get lined up with a 20B influence clan ... that hurts the 20B clan and all the other 20B clans each week that they do this too.  This is being done by a lot of clans in the game.

Big guys are having "pre set" little clans that they use during cvc ... then they go to that clan ... jump to another kingdom (may be very small kingdom) to go kill everyone they can in that kingdom ... then they disband the clan and jump to another one they set up and go to another kingdom and kill everyone they can in that kingdom ... during cvc they can jump to lots of different kingdoms and do this ... because they can keep joining different clans during kvk.  All those people in all those kingdoms are hurt by this since the one person might have higher influence than the whole kingdom.

This is just an example of glitches that are happening.