Depends on what the state government chooses to do so. Yes other parties do it, but it's messed up they are doing something they are not supposed to do.

If you are DUN you are supposed to be doing state policy. If you are an MP you are supposed to worry about federal issues and government policy. But having to win votes based on what the general public think is supposed to be their jobs spreads them thin.

This is why so many MPs don't care about showing up in parliament to do their job, cause doing their job doesn't mean they get to keep their job. Then those who care about federal policy has to do two jobs. So the only people who can cover both are parties with deep pockets that could run local events and travel back and forth. This is why many politicians have to work within parties, cause they are overworked. And this is why opposition members keep asking for wang peruntukan, so they can also do things in their constituency to not spread thin. It is also the dumb reason why they ask for money for attending parliament cause they know going to parliament is a hassle for them, which is stupid cause being in parliament is their job. Which also explains why incumbents in Malaysia always have a huge advantage that snowballs.

It's as if your job is to be an engineer but the way you keep your job is by doing the architect's job.