yep. who'd need more than three wires under a wirenut?
i got a few of these once.... put four of them in a single gang box, and then
try to fit a GFCI receptacle on top of them...... big fun!
I did a whole house update/remodel about a year ago, and left almost all the aluminum. But I added 4 dozen cans, only kitchen and two baths gutted.
So I was using existing aluminum switch legs, adding can lights. Alumiconns in the first cut-in can at each scheme was real tight.
The living room, though, had a two gang switch box and both switch legs got replaced, and we added a feed. There were already two aluminum feeds, so there was 5 wires - 2 al and 3 cu.
Only thing I could do was pigtail the two aluminum feeds to a single copper (3 times) then use copper-only Wagos to finish. A multi-gang box can for sure make you wish for more than 3 ports