Yes pls give EMP's maint access. Anyways, back to why singulo is best engine.
Lag
The problem with the massive lag spike is it CRASHES the server half the time. Full on reset. Meanwhile, the singularity rarely every would, it would cause lag, but unless you were RIGHT next to it, it was manageable.
Danger
Gais the singulo is free! Oh wait it fucked off into space. Because that is what it does 50 percent of the time, or nibbles engineering and then fucks off. Unless the antag decided to spend all of his points on a singularity beacon, then it usually only does damage in engineering and the lower half of the station. And, as a bonus, it does not give the entire server mindbreaker induced hallucinations, which get PRETTY FUCKING ANNOYING after the 20th round in a row, when 10 of those were crashes when some idiot failed to set up the supermatter.
The dangers of setting it up are minimal, if you are not a moron, just like with the supermatter. Electrified doors? For fucks sake you are a engineer, if you don't have some form of insulated gloves you should be job banned. Magboots are the same. All engies wear them already anyways.
Really, I would rather go engineering every round to set up the singulo then to have maybe 1 round out of 20 that's not ruined by the supermatter.