The first three seasons which originally aired on Fox from 2003 to 2006 were truly a landmark for TV entrainment and for comedy in general. They set the bar high for everything that followed. The 4th and 5th seasons (which were the product of a 2013 Netflix reboot) however, aren't even in the same even same league. It's not that they're unfunny, but it just seems like by now, the creators of the show are just capitalizing on what made the first three seasons so great without putting an effort to develop the humor and take it further. An increasing portion of the newest episodes is taken up by flashbacks accompanied by Ron's voiceover to explain things, or to fill the gaps in narrative, and it's just too much. Moreover, because of the way the latest season is written (5th as of the time of writing), it always seems like everything that's happening in the show is supposed to lead towards something big that's going to unfold in the season finale, which weakens the viewing experience, making it impossible for any single episode to stand on each own.
I'm still giving the series a 10.. pretending the reboot never happened.