>>23532104 (OP)
No. A gundam needs to a prototype or high performance MS that practically redefines a thing about warfare. Lets take the RX-78 for an example. Its the feddies first MS, it has a learning computer + a beam rifle, can re enter the atmosphere, etc. This combination of factors is basically what makes it a traditional gundam.
The ground gundams, despite the name, are basically just Ground GM's with gundam heads. You could say the Mk 2 is not a gundam by this definition, but the moveable frame is a core technology of every mobile suit going forward in UC. Hell theres a bunch of suits in UC that are actually just grunts with gundam heads on them purely for psychological reasons, the biggest example being some random GM2 with one in a manga somewhere.
The biggets example of this are the Astrays. The M1 Astray is not a gundam, despite having a gundam head, cause its just a grunt with a gundam head on it. But the Red Frame is a gundam, because its a prototype. Same with the blue destiny, its technically a gundam cause of EXAM. Thats how it works in universe anyway, most of the time.
In reality its just like this
>>23532150