The question that you are asking about is this one, which is visible to users with enough reputation. You need 10k reputation (or be the asker) to see deleted questions.

First off, questions that require the expertise of a lawyer are off-topic here and will be closed and/or deleted. As a community of experts in software development, we can't answer most legal questions. Our FAQ makes an exception for software licenses since it's often expected that, as professionals, we'll be able to know if we can use a certain tool or library in our projects based on the license terms of the tool/library and our project.

Second, your answer says, quoting:

I think, and I'm not a lawyer...

...

Again, I'm not a lawyer, and this is not something I really understand at all, but that's my take on it.

So it's not surprising to me that you were down voted for this answer. Stack Exchange sites are designed to provide people with expert answers to their questions, not opinions or facts. By starting your answer with "I think" and ending it with "this is not something I really understand", your answer doesn't meet the criteria of an "expert answer".

Also, you shouldn't blame moderators for being rude to you. Members of the community vote on questions and answers. Anyone with 15 reputation can vote up and anyone with 125 rep can vote down. Moderators are here to keep the site clean and handle exceptional cases quickly. This particular question was on the receiving end of community disapproval (through close votes and down votes) as well as flags for immediate moderator attention. Because there is no way to salvage the question for the community, deletion was best for everyone involved.

The question that you are asking about is this one, which is visible to users with enough reputation. You need 10k reputation (or be the asker) to see deleted questions.

First off, questions that require the expertise of a lawyer are off-topic here and will be closed and/or deleted. As a community of experts in software development, we can't answer most legal questions. Our FAQ makes an exception for software licenses since it's often expected that, as professionals, we'll be able to know if we can use a certain tool or library in our projects based on the license terms of the tool/library and our project.

Second, your answer says, quoting:

I think, and I'm not a lawyer...

...

Again, I'm not a lawyer, and this is not something I really understand at all, but that's my take on it.

So it's not surprising to me that you were down voted for this answer. Stack Exchange sites are designed to provide people with expert answers to their questions, not opinions or facts. By starting your answer with "I think" and ending it with "this is not something I really understand", your answer doesn't meet the criteria of an "expert answer".

Also, you shouldn't blame moderators for being rude to you. Members of the community vote on questions and answers. Anyone with 15 reputation can vote up and anyone with 125 rep can vote down. Moderators are here to keep the site clean and handle exceptional cases quickly. This particular question was on the receiving end of community disapproval (through close votes and down votes) as well as flags for immediate moderator attention. Because there is no way to salvage the question for the community, deletion was best for everyone involved.