Almost all insiders file trading plans far in advance as a defense against accusations of insider trading. Twice-a-year reporting actually makes it harder for insiders because they will have to file their trading plans further in advance. And it doesn't stop shareholders from suing insiders if they believe there was actual insider trading.

Wait, where in this proposal did you see a change in requirements around planned selling? My assumption, perhaps unfair, certainty supported by trends in US lawlessness, is that the whole scheme is to change reporting but not windows for planned sales.