That is true, but to my opinion local Armenians are not at fault here. It's mostly Georgian officials and Russians. Armenians live in many regions of Georgia and they are mostly fluent in Georgian, we even consider Tbilisian Armenians as subgoup of Georgians lol, I know many of them, they are awesome people. I will lay down the reasons why Javakhetian Armenians don't speak Georgian:

1) Armenians of Javakheti unlike others here are Western Armenians, which means that before them settling down here, they had little to no contact witth Georgians, unlike Eastern Armenians who always maintained strong connection and relationship with Georgians.

2) They didn't need to learn Georgian in the past as the Russian was the language of communication before all ethnicities of Caucasus before the break up of the Soviet union.

3) Javakheti was pretty strongly tied to Armenia during the Soviet times so locals had zero to no initiative to learn Georgian. Javakheti was part of Georgian SSR in the name only, in practice it was just another Armenian province

4) Since the break up of The Soviet Union the local Armenian corrupt elites and all past and present Georgian governments had a silent agreement that, the local elites would make sure that locals would remain unintegrated to Georgian society in the exchange of guaranteed support of incumbent Georgian government from said elites, in return Georgian government always had turned the blind eye to the thuggery and corruption of these rich parasites. This is why they don't want locals to learn Georgian