Yes, I had a dog who needed them emptying every two or three weeks. They didn't empty naturally, bran didn't help, a real bone didn't help (firms up the poo) if they weren't done he got infections and it was interfering with my being able to take him to the vet for other things because he was getting to hate the vet so much. Oddly we later got a bitch who also needed to have it done on occasion (about 3 times a year) did wonder if it was something that we were doing eg diet etcetera but it just seems to have been coincidence, none of our dogs since have had any problem (touching wood here)
Anyway the vet showed me how to do it for my dog and because it was me and i would just whisk him out to the garden and do it when i saw the beginnings of discomfort, he was much happier and more co operative.
Its not difficult but you do need to be careful and have the dog co operate.
My experience is that the thing about leave them alone and they will sort themselves out is not always the case, neither does a higher fibre diet always work, if the dog needs them doing then he/she needs them doing.
If you do decide to try and do it yourself, go very very gently, use disposable gloves, do it OUTDOORS lol and have plenty of kitchen roll to hand as well as a bin bag ready to take the smelly rubbish. If you cultivate long nails, don't even consider DIY as the risk of hurting or damaging the dog is too great IMO.