is it medirectbank provide account opening for non BE residents? On the online form, it seems to me that you need to be BE resident to open account here.
You need to have a registered residence in Belgium or in the EU to open an IBAN account with banks in Belgium. They all comply with EU regulations so you can expect strict KYC procedures. Relaxing the procedures will open opportunities for money laundering and account misuse by fraudsters so yes, be prepared to be identified.
I doubt you can open an account online. If a bank allows it, it will only be activated after they sight your documents. There is no shortcut to an easy IBAN account. They all adhere to EU rules.
You are 100% correct. You can open an account online, but before it is activated you need to send over a copy of your ID card and a proof of residence.