I travel fulltime and my primary internet is 4G LTE. But, even though I spend $250 per month on data, I still run out, and end up throttled to 128kbps for the last couple days of the data cycle. The internet is pretty much unusable at that rate. I can leave my email downloading in Thunderbird for a couple of hours and that's usable (gmail, however is not very usable), and I can read Hacker News (but not the articles…
https://support.google.com/mail/answer/15049
And as for reddit, their old mobile view is still available at the "i." subdomain - it's so much lighter-weight than the dreadful JS-laden one they introduced a while back, it's the only way to use reddit on mobile IMO: