I thought that changes in DT1 will change those who are on the default trust lists, but changes to DT1 does not change our own personal trust lists or even the trust list of others because those one our trust list stay the same and those on other trust lists stay the same, absent manual changes, and the personal trust lists are not changed by members very frequently.
Correct.
So if we have our trust lists set to level 2, then everyone on our trust list is level 1
Wrong: everyone on your own Trust list is at Depth 0. Please have a look at
your own Trust depth viewer.
so in other words our trust would not be affected by changes in DT1
It depends: if you have DefaultTrust on your Trust list (as most users do), changes to DT1 are likely to make changes to your own Depth 2. But DefaultTrust is
not included in my Trust list viewer, it's kinda added on top of that.
I used to have default trust on mine but I changed that, even though I am pretty sure that several members who I trust have default trust on their trust list.
Now that you mention it: I think this means DefaultTrust will still be on your Depth 1 (instead of Depth 0) because of other people on your Trust list. If you don't want that, you'd have to exclude DefaultTrust (by adding
~DefaultTrust to your Trust list).
I am not 100% sure about the accuracy of what I am saying, so I guess I am asking rather than stating definitively.
It's one of the problems with the Trust system: it's quite complicated, and the large majority of users don't understand it completely.
By the way LoyceV your loyce.club site isn't working properly for me on Tor atm.
Confirmed

DDoS-protection sucks

Try to hit CTRL-SHIFT-L a few times. A new Tor circuit solved it for me.