The reason why people complain about the arc of Lalo going to Germany is because it feels rushed. The pacing with the Lalo and Nacho stories was pretty off compared to what came beforeh. As much as people like to handwave shit away for their favorite show, its rather weird for BCS that theres not even a brief scene about Lalo at least being seen in an airport or something in the previous episodes. It doesn't have to detail every small thing Lalo did, but the show feels rather contrived without it. The guy who posted about it 5 pages back is pretty much right.
The rest is retarded for the very same reason and with Lalo being too resilient, athletic, etc., but I guess they had to hasten Howard's death and didn't plan things well enough.