Hello @Matanel325,
Yes, unfortunately it’s possible to decompile an extension to get its source code, however, this practice is neither allowed nor it’s ethical. Share the decompiled code or redistribute the extension as yours might lead to suspension as well..
Extension developers invest many time and work as they make their extensions, it isn’t good to take their work even if you didn’t share it. If you want to learn from popular extensions code, so you can check open source extensions, some examples are mentioned here:
Thanks.