Yes and no.
Sig arms Europe is completely different from Sig USA, despite being owned by the same global homo euro holding firm. Sig Europe makes small runs of their rifles every now and then, but mostly makes food packaging now.
Sig USA wears the Sig heritage like a skinsuit not unlike Springfield Armory, except unlike Springfield, they make their guns in the USA (with international parts, some from India, SIG SAAAR!) ,some from their own USA designs, and the legacy P series (P220 and such).
Indian parts are of course, from India, and are subject to Indian quality control, which is probably a factor in some of these issues.
I believe that the only sig SAAAR guns are their striker guns, which have had many teething and QC issues. The P series guns are mostly fine from what I understand.
The Current CEO of Sig USA is Rohn Cohen, who is most famous for running Kimber's reputation into the ground over cutting corners in their QC before he bailed. The P320 being allowed to be this bad is probably his fault, all things concerned. His head should be on a pike, but I don't even see him stepping down for this, because Sig USA line go up.