Heimishe brands? If that means making almost everything at home then most definitely yes pre-war, there wasn’t much beyond staples available. Afterwards they followed their community standards, very heimish where applicable, but regular coffee, cereal etc. I don’t think they ate Twizzlers…
I don’t see anybody forcing their chumros on others, I do see some here trying to arm-twist others into accepting their kulos…
I really didn’t want to debate you exactly because of your mindset equating chumros with luxuries. Do you think when my grandparents scrubbed their walls for pesach they were indulging in luxuries? So what’s the difference when it comes to buying shmira matza? Having mesiras nefesh for yiddishkeit is the polar opposite of spending money on luxuries.