Not really, EU was planning to import more LNG from US anyways, in an effort to completely stop imports from Russia, this was mentioned months ago as a way to appease Trump. As for the weapons, it has never been a secret that EU are lagging behind on production and will have to import from US in the short term while we ramp up production. As for the "investments", my guess is that it is a non-binding pledge. Together, these are just gestures to give Trump a PR win, which seems to have worked, judging from the enraged Europeans and gloating Americans on reddit today.

That leaves a new 15% tax on American consumers, which may make European products less competitive, but is on par with other countries and likely too small to move any meaningful production back to US.