I played a few games after the patch and I came to a similar opinion. I don't think the railgun was the real issue. The chargers were the issue and people were using the railgun because it was by far the best option against chargers.

I don't think the railgun needed such a nerf. I think the flamer buff and breaker nerf together would've brought railgun numbers down, because flamer is now crazy good against chargers while also being good against patrols. At least you would've had to choose between the range of the railgun or the crowd control of the flamer. Now I'm just going to be using the flamer, which creates the same issue as before just with a different gun.