It is not the same. The US government does not partially own Instagram or Twitter, and I've never seen pro-US narratives driven on either platform. I usually see the opposite if anything.
It's _extremely_ common for people with NSA or similar experience to have very senior positions at US tech companies, and there's a reason for that. It's nothing formal, it's more that having friendly people on both sides of the fence is mutually beneficial for the government and for those companies.