People should describe a policy, and a means for that policy to have made a difference to the economy, when taking credit. Otherwise it's like taking credit for the sun rising.
At the very least until their first budget goes into effect. This is not a new concept. It's why the stupid right wing memes in like.. April were all "Obamas first 100 days vs Trumps first 100" - because Obama was dealing with the freaking recession and the Bush policies and budget.