PM i general has:
- funny vocals
"Funny" can also be described as guys actually singing (or trying to sing) legit, though, rather than the usual grunting, screaming, growling or Anders that you get with most modern metal. Some of it sounds genuinely ridiculous, but most of it sounds fine. I would say there is a small portion of bands in the 'ridiculous' vocal bracket, and then a large chunk in the normal singing bracket, even if it's a little high pitched, it's still perfectly normal singing. I mean, it ain't Come Clarity or Delight and Angers, but it's okay.
- boring one-dimensional drumming
This criticism can be leveled at 95% of metal bands across all genres, and 95% of drumming across the musical world. I mean, how many bands do you know where people are like "well, the music is mostly average, but dat drumming bro". There are a few bands where the drumming is great, but I don't know of any band where the rest of the instruments are average but the drumming puts it over the top. Same with bass. Vocals and guitars are where most bands gain followers. Drumming is just a functional aspect of most bands, as long as it doesn't suck or sound like shit (eg. STYE) then it's fine.
Well, again, this is metal we're talking about. The genre isn't known for amazing lyrics
as with any genre of metal and music in general, there are some PM bands with really good lyrics. There are a lot of PM bands with stupid lyrics. Same with melodeath, thrash, death, and so on. There aren't any PM bands with lyrics as bad as "I feel like shit, but at least I feel something" though.
- average guitarwork with too much emphasis on pointless soloing
As a critique of Dragonforce, yeah, sure, but this doesn't really apply to many other PM bands. Most are pretty light on the solos and guitar work tends to be nice and melodic. Much better than most metal genres.
If you mean formulaic then yeah, sure, but point me to a non-prog metal band that isn't formulaic and that doesn't suck. As long as the music is good then it doesn't necessary matter if the song structures are kept to a certain standard.
Actually I think pm works the best in slow emotional songs. That way, drumming is boring by default, singer should sound gay, solos should be cheesy, and the band doesn't try to be evil and angry (ending up being funny).
PM is best for fast, melodic, energetic songs. That's basically the point of the genre
the ballads are OK but none of my favourite PM songs are ballads. There aren't many PM bands trying to be evil and angry, anyway, most of them aren't taking themselves very seriously. They're just having a good time and enjoying what they do. I know in large sections of the metal community such attitudes are frowned upon as it isn't trve, kvlt, etc, but hey... sometimes you've got to a smile and pretend the world isn't totally fucked up.