The reason why this is not transferable to the Democrats, is because they haven't previously refused to hold confirmation hearings for an appointee solely on the basis that there'd be an election later that year.
If you're asking whether Democrats would have placed themselves in a similar position in 2016 if the roles were reversed, then the answer is no. I'd expect them to consider the nominee, and quite likely vote against - but they wouldn't stonewall until election.
But Democrats did try to nominate Garland in 2016, so now can they protest if Republicans put up a nominee now? Republican position may be inconsistent between 2020 and 2016, but if Reps now take position taken by Dems in 2016, how can Dems be critical if it?.
If you're asking whether Democrats would have placed themselves in a similar position in 2016 if the roles were reversed, then the answer is no. I'd expect them to consider the nominee, and quite likely vote against - but they wouldn't stonewall until election.