Whether he meant it at the time or not (I don't believe he was sincere) is a moot point.
By now we all know that Trump isn't going to be able to pass any of the agenda he tried to sell us* during the primaries or general because the liberals in Congress on both sides will not allow it.
*This meaning the times he tried to take a conservative stance on an issue as opposed to the times he took a liberal stance on the same issue.
Trump's 'pie in the sky' promise is not a moot point for me... and many others.
Trump has pitched tax reform from the beginning of his campaign... sincere or not... he has contributed to a record stock market. And what goes up could come down even faster.
'An orange swan that won't stop tweeting'This has been my take... the market has rallied to the moon because Trump has promised the sky.
If his tax cut for the rich is not passed, the market may crash.
David Stockman: Trump tax reform overhaul is a pipe dream, stocks are heading for 40-70% plunge[...]
" Stockman argued that President Donald Trump's business-friendly tax reform bill, which was unveiled Wednesday, won't prevent a damaging sell-off. He previously said Wall Street is "delusional" for believing it will even be passed.
"This is a fiscal disaster that when they [Wall Street] begin to look at it, they'll see it's not even remotely paid for. This bill will go down for the count," said Stockman."
more at link
https://www.cnbc.com/2017/09/29/david-stockman-tax-reform-plan-is-pipe-dream-stocks-to-plunge-40-70-percent.html Major Index Performance Since the Presidential Election:S&P 500 (SPY): Up by 23%
DJIA (DIA): Up by 28%
Nasdaq 100 (QQQ): Up by 30%
Russell 2000 (IWM): Up by 32%
Financials (XLF) Up by 36%
" These are exceptional 11 month returns and have been achieved in part due to the expectations for tax cuts. If any suggestions materialize that the tax initiative is in jeopardy the moves to the downside could be swift and violent, especially in the small caps index which is up by over 10% in the last few weeks alone. "
https://seekingalpha.com/article/4111223-trump-going-love-huge-tax-cuts