The CBO figures more closely remind me of Leftist propaganda.
Companies hire accountants to manage income and expenses and to plan for future operations. If the accountants do a bad job, the company goes bankrupt and likely ceases to exist. Therefore, companies take this seriously, and they try to hire good accountants.
The US government cannot go bankrupt and is unlikely to go out of businesses. The CBO is an activist organization which simply exists to persuade people to adopt a certain political agenda. It doesn’t matter if they are right or wrong.
Director of CBO is a Republican. And the increase in the growth estimate after the Jan 2016 estimate was a response to the policy changes put in place by the Republican congress last year, signed by Trump.
But those tax cuts do not provide additional growth stimulus beyond the first year unless there is an increase in investment spending, which is unlikely because of the tariff concerns.