Good morning Michael,
Did you really start with emacs -Q, and have sent
the *whole* log?
I'm not an expert emacs user so it has been quite difficult to be able to run the command you suggested without errors. Due to the spacemacs layers config, to loar lsp-mode I wrote a specific init.el file and ran emacs -Q -l my-specific-init-el. First of all I try to open a local latex file to check if lsp works using this configuration file. Then I open the remote latex file and manually load lsp (M-x lsp-mode). The lsp does not start because it is not able to find the server. Reading the log file it seems that the path I set was not loaded. I attach both the custom init.el and the log from tramp.
Best Regards, Riccardo