I believe that the rise in social media has fueled the tendency for some to be offended, either for themselves or on behalf of others p- simply because they have a platform to express it which was not available to previous generations.
That can mean that the generation who saw the creation and growth of social media - mine in fact - are somewhat bemused by the way some people can get so het up about insignificant instances, which they make into personal crusades.
The fact is this - if you offer a freedom as a society, and that includes the freedom to be offended, then you will get people who will massively abuse it.
That's the nature of freedom - in order for it to function, it has to be open to misuse, which hopefully is in the minority, and doesn't cause too many problems day to day.
That means, to enjoy the freedom we all have to be offended if we feel so, then we have to learn to live with numpties who turn it into a profession, and generally attention-seek as if their lives depended on it.
Personally, I will live with the nonsense to enjoy the freedom, as I do with various other freedoms which we all enjoy, but which by the law of averages, will irk some of us some of the time.