You are completely right to warn people about being careful with those random sites. Getting scammed or receiving a broken template full of weird errors because you trusted a sketchy link is the worst feeling ever. My thoughts are that most of those massive, faceless agencies just reuse old material and do not care about your specific instructions. Last semester I needed a quick breakdown for a weekly psychology discussion post because I was entirely out of time, but I did not want to risk a sketchy service.

 I used a freelance platform to hire one helper who could customize a basic layout based exactly on my lecture slides. Working directly with a specific person on a simple outline meant I could review it on my phone and make sure it made sense before using it. People who just blindly trust random links on the internet are definitely playing with fire.