If that was the case, Turkey wouldn't have gone ahead with the S-400 when US was threatening to kick Turkey out of the F35. What's the point of having the most advanced weapons systems when you'll end up being a puppet to the US and should always act according to their interests.
AH-1Z deliveries to pakistan have been stopped and so were additional F-16s. While they were initially offered as part of an aid package, you never know when US would turn it's back. Regarding procuring additional jets for India, I'd say we should go with 1 or 2 more squadrons of Rafales to maintain uniformity with the current fleet and also it'd be easier wrt spares/maintenance. If IN also decides to go with Rafale-Ms for IAC-3 (54 required and US wouldn't offer F35, while IN isn't keen on F-18 for IAC-3), I'm sure Dassault would offer localized production with ToT
T129 ATAK comes more under the light attack chopper like that of the Chinese Z-10 or Indian LCH.
Also, attack choppers are used to support ground infantry & mechanized columns, used for anti-tank warfare but not for direct confrontation with another chopper