Although 1 Corinthians 15:33 is in the context of those who denied the resurrection I think the verse also rightly applies in a broader sense. That is partly because Paul was quoting a pagan (non-Christian) Greek poet (Menander) when Paul said spoke of bad associations spoiling useful habits. Menander obviously did not believe in the resurrection of Jesus Christ, yet he nonetheless wrote of the danger of bad associations.
I think it is very sensible for people to limit their association with those who have much lower standards of morality (and other behaviors) than ourselves. That is especially the case if those with lower standards than us are promoting the lower standards to us.
Likewise, associating greatly with those who are frequently deceptive in their speech (and/or in their writings, including in online blog posts) is dangerous since listening to what they say and /or reading what they write can put us at risk of becoming deceived (and of making bad choices) if we are not very careful.
It is however good to occasionally listen to those who say (and/or write) things that we currently disagree with, for they might be right in some of those matters. We should use discernment.
In a number of ways, even people within a congregation of a religion which we might think is the correct religion, there can be people who to varying degrees are bad associations. Likewise bad associations can exist in completely nonreligious organizations. Some who are not members of any organization can also be risky to associate with.