We know.
As your suggestion is at least serious in tone, I'll answer though: initially it's not a terrible idea. Unfortunately you have to realise that players getting caught by other players is
intended, and sometimes very necessary. Piracy - a highly discussed aspect of ED from day 1, and whether people like it or not, a highly valid playstyle. Ability to bounty hunt PvP murderers - even you must agree with this. All and more ruined if you could travel faster sans hardpoints deployed. Let's not kneecap PvP bounty hunting just as we're getting it going, aye?
And the avenue for abuse is palpable. I can already think of multiple ways this can be taken advantage of in combat, including macros to retract/deploy hardpoints mid combat to allow for synth/re-establishing reverski position/retreating until shields recover/evading missiles flawlessly etc., as well as avenues for abuse outside combat - notably escaping C&P or in mission abuse.
Simply put, I don't see the problem with variety. Why is it anyone's problem if the game provides a couple of ships that are truly big/bulky, and cannot race around canyons like a flea on Thargoid crack? Why do all ships HAVE to handle the same, to appease a few players that would like to see a cutter shape on their HUD instead of an iCourier shape when canyon racing? "But introduce new ships instead that are truly bulky" - and then players will complain
they don't handle like a vulture.
Pick the ship for the job if ya ask me. No sense in making ships all one and the same thing. What this thread addresses, in some way, is that very issue: that characteristics are being blended out.
So it's not that "PvPers is ruining the game for everyone else": the game can seek a modicum of balance and diversity
without it being attributed to "them nasty griffing PvPers".
If you really have that much of an interest in evading PvP encounters, to the point you want them to become optional...well, FD thought of you from the moment the game was developed. Simply exit to menu, and hit "Solo mode"