If you pay to have the info a few seconds before everyone else, does this make it insider trading?

You don’t have the info “before everyone else”. You have it after the ones who are guaranteed to benefit from knowing it and/or from disseminating it. Whether you can benefit from it or are the mark is debatable.

The issue is the conflict of interest in POTUS' office. A news agency giving high speed access to news ostensibly just reports news, doesn't make them. The office of the POTUS literally makes the news, even more so today than in the past.

The markets are very headline driven these days because Trump is a prolific poster and is highly unpredictable. This is basically him selling preferential access to market moves that he himself generates.

It's truly an unprecedented level of grifting happening.