John Mueller of Google said on Twitter that "publishing frequency alone does not make something spam." Google's algorithms don't look at the content volume as a spam signal alone.
So if you publish once a month versus 100 pieces of new content per day, that specifically doesn't mean Google sees the site as spammy or not.
Some sites publish a ton of new content daily, and others do not.
John added that "Posting every day is fine, if you have new & relevant things to post every day." But if you do not have anything to write daily, don't force it.
Here are those tweets:
Posting every day is fine, if you have new & relevant things to post every day. I can't imagine that there's news about LED lights for every day, but honestly, I'm not an expert on that topic. Publishing frequency alone does not make something spam.
— John Mueller is mostly not here 🐀 (@JohnMu) January 12, 2023
A few years ago, John also said publishing frequency is not a ranking signal.
Forum discussion at Twitter.