Lol this is so spot on! It's poorly designed that Obersoldaten that have both bundle grenades and frangibles to annihilate SMG troopers up close such as Rangers, despite having already shredded them on approach. LMG grens are better designed since they can't use rifle grenades up close, but LMG's in general still have pretty high DPS up close. There's very little downside to LMG's.
My big one: Having most infantry squads reliant on long-range DPS (LMG's) which means that instead of taking cover and tactical positioning, the optimal micro is often to just attack moving around in a blob to get max range LMG's firing ASAP.
Or: 1 man cheese snipers that discourage active gameplay and instead force opponents to surprise blob up to it to try and force it to retreat or instagib it before the player reacts.
Beyond these two, there's so much of CoH2's design that actively encourages and promotes blobbing that could otherwise be avoided. Then people are always so surprised and disgusted to see people blobing.
Blobbing is an Issue in every single RTS game