Trust me there is no difference between 1000 and 20000.
Then you're doing it wrong
Wrong, !@#$ty colonies makes being aggressive the best thing to do, to capture home planets.
There is no "wrong", only "different", with regards to play styles. If you want to play aggressively, like Oldry is doing, then you don't build arcs (or maybe the odd one as a back-up) and just pump everything into a massive fleet to take someone else's home planet, rinse, repeat. If you want to take it slowly, then you build arcs and build yourself a big empire. Depending on what you want to do further down the line depends on how many arcs you send out to each planet.
