Probably because what you want is WoW, not Elite. Elite is supposed to be dark, grim, unforgiving. Listen to DB describe the universe, read the novels. Way worse stuff happens in there than blowing up a sidey. This 'solution' you like so much is what is lazy and cheap, and creates an artificial constraint on the universe. Heck, what even is the problem here, besides some ruffled feelies? Did you lose a sidewinder to something when you started? Did it matter? "Oh no, I have to grab a new free sidewinder which costs exactly 0cr", said noone ever. People just starting out wont even know it is a human, never mind have heard of SDC. Or care. They get blown up. They restart and try again. You know where all the whining and moaning about poor sealclubbing happens? In the DD forums. You know where it doesnt happen? The newcomer forums. Guess why?
SDC is annoying on general principle, but in the end they are just a small group of losers with effectively zero impact on anyone. Outside of forums, that is.