The quick answer is probably not. If you just got a new water heater installed and you have the time and fortitude to drain and refill it a couple times a year, then sure. If not, don’t worry about it. The fact is, most water heaters these days use a swirling action to keep sediment from building up.
If you have an older heater it’s probably best to leave it be. Definitely do not pop the temperature and pressure relief valve to test it, as it may not seat back properly and would require replacing.
Let’s face it, we’re all busy and have little extra time. We want to install a water heater and hope it lasts 12-14 years before we change it out and that’s ok. The best thing to do is not pile stuff around them. Keep the water heaters and the area around the heater clear. If your water heater does fail, give me a call.