Nope. You are talking about the New Start treaty. 1) Russia suspended the treaty 2023, so it is not relevant here. 2) The use of hangars is not prohibited, as

Nope. You are talking about the New Start treaty. 1) Russia suspended the treaty 2023, so it is not relevant here. 2) The use of hangars is not prohibited, as can be seen by the climatized hangars that the US keeps their B1 in. 3) Russia has announced plans for such reinforced hangars years ago, but very likely some dacha or yacht had higher priority.