I Want a Citi Custom Cash, but…

I’ve been thinking about getting CCC for awhile now for groceries (yes, I spend less than $500 a month), but I see so many horror stories here about people having all sorts of problems simply getting it to work, whether it be unexplained errors linking bank accounts, nonsense credit limits, surprise account closures, etc. (hence, “Shitty Bank”). Is this just confirmation bias from a very small number of people, or is there really a high probability I’ll run into problems too? I’ve never used Citi before and while this card would be ideal for me, I don’t want to touch it if there’s a real chance I have to deal with that kind of crap.