Both issues (drinking and unfiltered internet) are similar:
It is a question of placing one’s self in a place where they can C”V be Over many Avairos.
The difference is Purim is once a year and unfiltered internet is every day, but both are dangerous.
If one can be Omed on themselves not to be Over anything (and daven Maariv with Kavanna!) by drinking then Kol Hakavod (If you are over 21). Otherwise, the Rema is someone who you are already somech on for many things.
However, since it has become the “in thing” to drink, all else seems to fall by the wayside. If only the “chumra of the week” was not to drink! (and Kavod to Rav Shmuel who is trying to push it).
hereorthere: I believe that is part of the “in town” thing, to shop only in “heimish” food stores as to not be tempted by Assur food. (Correct me if I am wrong). If they can afford it, its not such a bad geder, especially for small children.
Ben Levi: The Mesorah of many Jews for thousands of years has been to Daven Maariv (and say Krias Shma) with Kavanna (even on Purim!).
As the song goes “Shikur Iz ah Goy”. The gedolim of Europe used to spout Chiddushim when “drunk”, may we only be Zoche to get to their level.