Can frequent SMC, NVRAM, PRAM resets and/or mac OS reinstall damage MBP in any way?

No.

You can do those resets all day long if you wish. They do no damage whatsoever.

If you are having a problem, providing your symptoms will allow other readers to make suggestions that may improve your situation.

Hi,

All are recommended by Apple as needed. The only one that comes with any kind of "caution" is the SMC reset, which wants you to try a list of steps first, and only then do the SMC reset. In any case, I've never heard of any one of them causing an issue. I've done each of them many times with no ill effects.

The SMC reset simply drags the processor power and the System Management Controller power down to Zero. These two chips are designed to do a deep reset when power is RE-applied, and to get everything synchronized and working correctly without any pre-conceived notions staying around to gum up the works. There is also a set of stuff (like what Hardware is where) that will be recomputed after an SMC reset, and some parameters that will be set back to their default values.

The PRAM Reset re-writes the Parameter RAM to a known state AND recalculates a good checksum and stores it so that when inspected later, the checksum indicates PRAM data are valid, and can be trusted.

Nothing particularly destructive there, but if you added custom parameters (for example, I set a parameter to get Verbose startup messages) that setting will be restored to the default (NOT Verbose). If needed, any such parameters must be set again manually.

There is no trace of anything except factory-original settings after those resets, until you start to load up the System Software. If those extensions were removed, they will not be re-loaded, and you are completely free of them. Nothing left behind.