Is this against the rules?

[mwe2187]

I would suggest reading through this fighter etiquette guide

Fighter Aircraft Etiquette

We now have autopilot for fighters. Surely you’ll want to fly them too, so what’s expected of you on the Expert Server? December 2017 update is cleared for takeoff. There is currently no system limit on speeds for fighter aircraft, however a reasonable speed should always be maintained when in a controlled airspace, whether tower or approach. As a general rule 250-300kts should never be exceeded when under the control of ATC. The following are a good rule of thumb and the recommended milit…

You must be careful with your spacing when “escorting”. And not everyone likes it when they have a fighter flying around them. It’s also important to give the aircraft the proper spacing when on approach

(I personally do not like when a fighter is buzzing around me)