I think a lot of the uninformed people who cry for "tort reform" don't realize that there are already protections like this one that are built into the law to discourage unreasonable claims/demands, etc.
Well, somehow these protection haven't stopped me from being notified of my status as a class action plaintiff in a case which I have never heard of, from which I stand to gain only a token benefit, but which promises to net the crusading plaintiff's attorneys a fat multi-million dollar payday. In at least seven different case over the years, I might add.
And BTW, the so-called existing protections to which you refer are all too often left to a judge's discretion, which means that they have virtually no real deterrent effect on whether a bad case is likely to be brought in the first place (as this article demonstrates.)
Unfortunatly most judges are not aware of these protections either.