that fix should be clientside aswell, as far as I know.
Other reasons for those crashes might be serverside addons, or it may even be that those crashes occur because some kid doesn't like your server.
Anyway, from what I can say ArmA is pretty good at handling clientside stuff. You could even use an Addon-vehicle on a server that doesn't even have the addon and it won't crash. It really depends though as long as the addon is well done it shouldn't cause much trouble.
Some AddOns may be a bit messy though. (we all remember those servercrashes caused by XAM, don't we ?)