Why do most papers in CS conferences say "novel" repeatedly now a days?

I find this extremely irritating.

It is up to me, as the reader, to judge whether this is novel or not.

Please tell me what you have done, rather than telling me that (you think) it is novel.

Don't tell me that your results are important, or surprising, or anything like that. I will judge the importance or surprise or novelty.

It is not like if you didn't tell me it is important (if indeed it is) I wouldn't notice.

And if it is not novel, why would you be submitting it to the conference, anyway?

It's fine to say, in your paper, that (in your view) *somebody else's* results are interesting, novel, surprising, important, etc. But such statements about your own work carry no weight.
@MartinEscardo Sometimes, that stuff is genuine motivation. But when it's the paragraph of the paper the supervisor wrote, it's usually just hype.

@pigworker

Not when I am the supervisor. On the contrary, I have deleted anything like this in any student's writings.

@MartinEscardo I certainly wasn't thinking of you.

I think it's ok to express the importance of a problem you're addressing, and thus why your work might help people. It's important to keep that stuff focused on stakeholders other than oneself.