As a kid, were you ever emboldened to jump ramps with your bike by watching Evel Knieval? I don't mean little ramps. I mean something really daring? Something you truly did not possess the ability to do?
Then boom. Wrecked bike and broken collar bone, not to mention the bruising and the missing skin.
That's what it means to cause a weaker brother to offend. He wants the faith to do things that he just can't do, but doesn't really have it.
No, that is not what being a weaker brother means. In this scenario the "weakness" is wanting to do something that is dangerous but being convinced it is okay.
But the actual "weaker" brother in Scripture is the one who THINKS it is not okay to do something that is, unbeknownst to him, is actually perfectly okay.
World of difference.
The weaker brother in Scripture is one who thinks something, like eating meat offered to idols, is a sin when it is not a sin.
Paul could not have been clearer that his problem is not his lack of self-control but his "KNOWLEDGE"- he thought it was a sin to eat meat offered to idols. The weaker brother did NOT think eating meat offered to idols was okay while, for him as a weaker brother, he was just not able to do it in moderation. That is not the issue at all.
You have totally misunderstood the weaker brother principle.
If you had explained your understanding of the weaker brother principle two days ago when I asked you to, I could have corrected your error and saved us all a lot of time.