Abba_S,
1. What does one have to do with the other? People who participate in violent demonstrations are by definition people who do not care about jail. Most likely they have been there before and are looking forward to reuniting with old friends. Recalcitrant husbands are a totally different type.
2. I wrote that some husbands are not fazed by jail. In a way they like it as they get rent-free rooms with heat in the winter and air conditioning in the summer (also free). If they are placed in the “Torani wing” they get three mehadrin meals per day (also free), davening every tefilla with a minyan and learning.
3. That is not the government’s proposal (although it was approved by the Ministerial Legislative Committee, which means that the government is behind it) but a proposal of MK Shuli Mualem (Bayit Yehudi). While her party is a member of the coalition this suggestion is a private bill. This bill has been recommended by the Religious Court System although it actually only affects ten men currently behind bars. While the Committee’s approval means that the AG has approved it I personally have my doubts if it will pass the Bagatz (Supreme Court) as prisoners’ rights to religious freedom are enshrined in law and Court decisions (in one case a court refused to extradite an alleged hit-and-run driver to Florida because eh would not be able to get kosher food without ascertaining if he is actually observant).