Transition from original Tslim to new Tslim X2 question (couple questions)

Used to post here litterally years ago, but, here goes:

While at my CDEs office when I got my new x2, we were going through the process of putting in a cartridge etc, when I noted (she had actually never worked with the original Tslim) that it was different that you now have to fill the cartridge when it was outside of the pump instead of the other way around like the original Tslim.

Anyway, the rest of the process went smoothly and I’m still using that cartridge since last week Friday. Just today, I saw on another forum a lady complaining of the irritation of having to “remove the air from the cartridge when the old pump used to do it for us!”...

I never removed the air when I filled it on that first go . Are we really supposed to? There have been no issues so far, and I guess it looked like I “had things handled” as I was going through the process so the CDE never said anything or noticed.

Should I be removing the air from the cartridge from this point on though? While not a big deal to have to do it, if it isn’t required though, I’d rather avoid an unnecessary step.
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Next question (which I think is impossible to do):

One thing that DOES annoy me about the new text vs the original Tslim, is when you set a basal to less than 50% a minute or so later it will beep annoyingly telling you so.

YES I set my basal low because I wanted to DISCRETELY treat a low without alerting anyone to my issue, but THANK YOU for alerting everyone that im doing something over here... now that... is an annoying new change.

Any way to turn off just that one alarm? Cus it’s really an unnececcary thing and just complicates the discreetness with which I try to handle things sometimes.