I read a bunch of comments defending the devs that shouldn't be blamed, but I can't stop remembering what happened to me some time ago. First time I login on an online banking service, it required a otp code sent via sms, nothing special except there was a countdown on page, and not the one for requesting a new sms, but a countdown of 30 seconds for inserting the received code. I received the code 2 minutes later. Maybe one shouldn't blame the devs but I can't think of myself in the same situation trying hard to convince the manager/designer that that was a very bad idea, how bad you should be at ux to accept to implement something like that? Having said that the article mentions and blame Javascript, like everyone's love to hate, but in the meanwhile my "performant" google app on my iphone is almost a 1gb in size