It is important to note because trump is pretending it isn't a tax, it's not logic meant to abolish all taxes. The comment seemed pretty tame for you to pull that out of it.
The real problem is that people can't afford an extra 40% tax on top of what we have now. We don't need to abolish taxes, we need to bring them up for specific groups, mostly the ultra rich.
I really hate this saying now. It's always used to justify villain level shit.