you could “sue” for any reason just to waste everyone’s time and money.
this is literally what happens today, all the fing time. examples of it as a legal strategy appear all over the place.
I've addressed the 'standing' nonsense in plenty of places. standing isn't a thing that is set in stone. examples of lack of standing cases going to court and case that should have standing being denied are everywhere. you just need to find a willing judge either ideologically or bribable.
off the top of my head: student loan relief was challenged by companies who managed the payments process as contractors for the government, widely agreed upon by legal experts to not actually have standing. cases involving abortion being tossed out due to lack of standing due to the birth or death of the fetus. Obviously US examples, but if i bothered looking into the EU id find examples there too.