Yes... that's the key point... IF the grounding block solves the problem, it is indicative of other electrical problems that have the potential to cause other issues.
I used to install two-way radios back in the day... I was checking an installation and found voltage on their antenna line... that was weird... there was not supposed to be power their unless the radio was transmitting...
I ultimately tracked it down to a surge protector plugged into the wall. They swore they never had problems before, then admitted they had only recently bought that surge protector. Basically, the surge protector revealed that there was an improper ground somewhere in the building... and yet everything they had was working correctly.
As a company responsible for servicing their two-way radios... I said that they should leave that surge protector unplugged until they could have their electrical wiring checked by a professional... otherwise we could not guarantee their radio would keep functioning.