Just to be clear, LPQ's are not /remake specific punishments, they are Leaverbuster punishments. /Remakes simply cause you to be flagged as a "leaver" by Leaverbuster, contributing to the LPQ punishment. LPQ's are not given out for a single leave/disconnect, they are given out when you show a habit of leaving/disconnecting from multiple games. This means that, while this may be your first time as the "leaver" in a /remake, you have been flagged as a "leaver" in multiple other matches as well, triggering the punishment.
Something to keep in mind is that there are other ways to be flagged as a "leaver" besides just flat out leaving the match. If you disconnect for an extended amount of time, even if you reconnect you still will be flagged by Leaverbuster, and this includes connecting to the match late (as covered by /remake). Also, if you stand idle or just run around in circles doing absolutely nothing, Leaverbuster does pick up on this behavior and flags you as AFK.
Now, if a majority of your leaves/disconnects are due to something on your end, such as your router/internet connection, it's your responsibility to find a solution for the problem so that you don't disconnect from any more matches.