how to get <lord's clogs> shoes and <yukata> armor?

[Felis]

There is NO excuse to lock all those items behind a cash shop. None. It's bad enough my new character can't get the Lightning event stuff

Then you should be happy that the Lightning event stuff is not even in the cash shop ^^
SE is not obliged to bring old event items again in the first place.
During 1.0, if you missed an event then you couldn't get the item next year and not from a cash shop. You just missed it.

I remember that SE said 1.0 event items wouldn't be available in 2.x. Then they were, and 1.0 players were outraged.

seasonal events =/= 7th umbral one-time events