It's certainly not negative, but "Metroidvania" already did the trick with encompassing 1997 - 2008. CotM was the only Metroidvania not produced by him, so I'm legitimately confused why the past two months everyone wants to call everything not made prior to 1997 an "Igavania", because...
...the producer doesn't matter as much as we think. The directors are the ones that matter most for the final product, hence why Takeda Takashi was the one who said he made all the decisions for Harmony of Dissonance.