ALT you are assuming that impeaching Trump will have the same aftermath as Clinton's impeachment, that it would cause Trump to be viewed as a victim of circumstance and a scapegoat. Maybe that would indeed be the case, and I have no doubt that is why Pelosi and Schumer have delayed it for so long. Although, one could argue that Trump IS being impeached right now in all but name.
Still, there are many flaws in this idea, notably, the differences in the comparison and the fact you only use one other comparison. .
First, Clinton was, despite demonization by his detractors, a very popular President. He was impeached for lying about a consensual act of sex, a type of lie that I am sure every American male has told more than once. His detractors will try to counter that and say it was perjury, but let's be honest, this was a deliberate political move to get rid of him.
Trump is very different. Again, while some will deny this, he is NOT as popular as he claims. Even the Rasmussen Reports (known for a clear Republican bias) give him a current Approval Rating of 46%, nearly 20 points lower than Clinton's was a month before he was impeached. While Trump and his supporters insist that there is political bias due to "sore losers" upset over the 2016 election, there are actual many impeachable offenses Trump could be charged with, including refusing to comply with court ordered subpoenas, witness tampering, witness intimidation, bank fraud, wire fraud, tax fraud, conspiracy, accepting illegal campaign contributions, embezzling money intended for charity, nepotism, perjury, money laundering, and falsifying documents.
There's also the case that Trump, unlike Clinton, is starting to lose what support he has in the media (insulting Fox News for their coverage of Mayor Pete was unwise) and Justin Amash's very public condemnation is only getting him renewed support from his own state.
And to top it off, Trump's speech today in the Rose Garden was, IMOHO, rather... undignified.
There's also one thing most everyone forgets, and that is Clinton was not the first time a President was impeached. The first time was in a case where the President was unpopular, unethical, and a blatant bigot.
Yes, I'm calling Johnson a bigot, cause he WAS one. He was a bigot even by the standards of the time. He had plans for ethnic cleansing of non-whites, which fortunately, he never had a chance to enact.
Even though Congress impeached him on a technicality, and it was clear they had political motives (meaning, everyone despised him) nobody cared. The unsuccessful push to impeach him didn't help his career at all. Much the opposite, it resulted in him losing what little influence he had as President, and the Republicans who voted for acquittal also lost reelection.
So, what does all this mean? Personally, I do not think impeachment will gain Trump sympathizers or supporters among the voting public, although I do think he's likely to lose some positive media support.