Should i lose lp for this game?

Basically, i was dcd very early into the game, about 5 minutes in due to bugsplat. I tried coming back asap but my laptop is not the fastest, im usually the toaster in loading screen. It ended up taking me about 6 minutes to come back, due to having to reboot laptop then run game as administrator I came back 4 levels down which is whatever and played the rest of the game out. I played about 90% of the game. We win the game, hurray i wasted my efforts and might as well have stayed afk because i ended up losing 17 lp for winning. To me this is absoulute bs. The fact that me being a toxic Dhead who is purposely ruining game is held in the same weight as someone who got fkd over and tried their hardest to get back into the game asap and still play it out. That's just stupid. So note to self, if u get bug splatted and cant instantly reconnect then dont even come back because you are going to lose lp no matter what. Riot support told me if they changed this system players would end up abusing it and troll, leave and comeback to play the rest and blame leaving on lag. This is just unfortunate for anyone who has to deal with it. best part is, you're not even an option to be honoured post game.