Admitting you have decompiled your own script with a 3rd-party decompiler.

It looks as though some have discovered a way to prevent AutoIt from being decompiled.  (Although you are not allowed to talk about that on the AutoIt forum.)

Obfuscation (as practiced by Obfuscator and as demonstrated in the snippets posted above by the OP) has never and will never be a problem. All that is changed is the script itself.

Altering an already compiled exe to prevent decompilation is also not a problem - several threads have been allowed showing how this might be done. However, we are certainly not going to to give official blessing to anything which might act in such a manner - it is for the individual to test them and decide whether they are suitable. And as has been already been pointed out, mentioning decompilation is best avoided here - a good reason for the results of any such tests to remain private.

What is a problem is altering the AutoIt3.exe or Aut2Exe.exe executables - that is against the EULA.