Is it true that the series Grimm is getting worse?

This question is really only for those who have already watched the series Grimm on Netflix. So it's like that…

I've been briefed on the show and it's supposed to be pretty good, only I've been told that since Season 5, the series is going down (getting worse) and Season 6 is pretty short, because the producers noticed that Grimm has dropped, Now here is my question? So first as a hint. I'm only on Season 4

But now to the question😅

Is it true that the series drops off Season 5? And am I supposed to continue watching?

I already found the first seasons underground bad

I don't know. I broke off the first episode due to underground bad, actor performance.