I'd have to disagree with you there. It's can be a gamechanging exploit. You can routinely heal 3-5 bars per jump for 0 drone cost and it doesn't really make sense to say it costs you a jump because you are jumping once every system anyways. It's essential a free heal. That's very significant in a game where you can lose by literally 1 shot, or because you are short by 1 missile/drone part/etc. The alternative is to spend scrap on repairs, and if you have 5-10 scrap worth of free heal multiplied by a dozen or so systems it adds up very quickly.
And then there are those times when you get free hull repairs from saving another ship when you really need the Scrap for something useful...
Then you have those battles where you routinely lose more than 3 hull every time because WHAT THE HELL? OH NO YOU DIDN'T JUST FIRE A HERMES AT ME YOU BASTARDS! YOU'RE SUPPOSED TO BE DEAD/SURRENDERING!
And well... missile ships...
It essentially saves you as much scrap as a lifehack does in saving money. Not very much and you're better off eating an apple the right way anyway.
I will admit though, it is fairly rare that you will get a drone bay, drone recovery arm, and a hull repair drone, and those who REALLY care about it can just not absuse the exploit (its a singleplayer game after all) but ideally it would be nice to have it non-existent.
There's also a neat trick to prevent losing a Hacking Drone to Defence Drones which works most of the time, as long as you are quick on the draw in powering it down. It would be nice to have it non-existent as it saves you more Drone Parts than that FTL Lifehack and is a lot more useful.