Emotions are high rightfully but facts still matter. Your fact is not a strong one - it is splitting hairs AND Trump's weasel words don't excuse him from the messaging and meaning he was conveying. Besides, these investigations are complex and take a lot of time - there is NO way Trump was in a position to know the "cause". That point you make is moot and in the emotional context, fucking minuscule and NOT partisan. Unless you are a sociopath then sure - both sides can have equal time (*).
.. from my edit: in his view it is never too soon to inject politics into national tragedy – and use it to attack opponents and advance his agenda
➡️ January 20: FAA director fired ➡️ January 21: Air Traffic Controller hiring frozen ➡️ January 22: Aviation Safety Advisory Committee disbanded ➡️ January 28: Buyout/retirement demand sent to existing employees ➡️ January 29: First American mid-air collision in 16 years