Music Complexity Bias
Music Complexity Bias Syndrome (MCB/MCBS) is a newly emerging approach towards music that puts complexity in the place of quality and pleasure from listening. In plain english, you could explain it as "the song is supposed to be complex, it doesn't matter if it's good or not" or even picking the more complex path instead of the simple and obvious one, not caring about the final outcome[1]. It is the opposite of extreme musical reductionism and is the main power supply of Cluds (Complexity Larping Chuds) and Mikes (Microtonal Theorists).
“Life is really simple, but we insist on making it complicated. Also fizz is pretty cool btw” - Confucius might've said some of this
Examples
In Music Criticism
Most common examples of MCBS stem from music criticism, album ratings, internet forums and "unpopular opinions", where self-proclaimed music expert cluds pretend to know what they're talking about. For further investigation, I'd suggest watching any album rating by Anthony Fantano.
Examples of MCB in Time (TCB)
The song System by Brotherly sounds pretty complex at first, but eventually you realize it's simply 6/8. Because Brotherly knew very well what they were doing with all the syncopation, this is actually a case of TCB on the side of the listener as we are the ones hallucinating the absent complexity.
There is a video of a guitar player describing how proud he was of his 7 + 5 riff, until his teacher or someone told him it's just in 6/8. I would've included a link if i could find it.
Similar Phenomenons
TCBS
Time Complexity Bias or Time Complexity Bias Syndrome (TCBS) is an occurrence where the composer overengineers the "complex" time signature(s) of a piece, when it just ends up being equivalent to a much simpler time signature. It is one of the branches of MCBS.
Microtonality is considered something so innovative by some to the point of where they start pushing it into anything and everything. People with this trait are called Mikes.
One technically wouldn't be wrong to say that every time signature can be simplified to 1/2048 time, in the worst case, with a few tuplets or demisemihemidemisemihemidemisemihemidemi(...)quavers. This is actually a different phenomenon (mentioned earlier) called extreme musical reductionism. You could also associate it with the Occam's Razor fallacy.
What doesn't have as much to do together with the Time Complexity Bias is the everything is in 4/4 if you count long enough theory, even though these two can easily be confused. TCB is about the sum of the values of measures, converting it to 1 measure with a single time signature and simplifying it by dividing the numerator and denominator by the same number. The Everything is in 4/4 theory however just goes on to ignore the intended measure length and just counts everything in the simplest way to count (yet the stupidest way to interpret the actual intentions of the musician). This theory technically falls under extreme musical reductionism.