Weak chord closure, hence no falsetto?

[MattOr]

Hi all!
So, I'm actually more into the guitar than singing, but since its fun to mess around alone at home Im kinda forced to do my own singing. Anyway, I havent played or sung really for many years but recently got a guitar and started whacking away at it again. Ive noticed that I have zero falsetto these days, which surprised me. Back in the old days I never had a problem with falsetto (not that I was ever really into using it anyway). But I suspect its indicative of weak chord closure? Please forgive the vox recording quality, theyre recorded through a phone earbuds till I get round to buying a mic

 

 

https://youtu.be/Uc9Eh4YSR20