Firstly releases are made by users of this site and of other emule sites, if you mean does dead-donkey make its own rips... no that would be illegal so this site does not publish, download or verify any links, the sites content is provided by its users. You need to talk directly with rippers about how they handle their own rips, and include subs. The DVDs come a huge
wealth of countries, sites and even dvd editions, which means you need to research the dvd as to know what they can get their hands on.
unfortunately, Its very presumptious to assume the dvds even have hebrew subs, the vast majority of dvds don't have.
This leads to:
1. If hewbrew subs are not on the source, it becomes unlikely releases will have subs to be ripped. Speaking from experience owning, many, many dvds. Very few ever have subs on them in hewbrew. only very cheaply made "global distribution" discs have these. R1 DVDs will not (american), because R1 territories aren't generally hebrew speaking. Most releases here in the uk are made for the Western European, or just plain uk market. Very few DVDs I have have hewbrew subs on, only really famous films have them on and rips are two a penny.
2. In cases that have hewbrew subs on the source discs, they'll probably be just left on by the ripper unless they need the space (with the case of subtitles its extremely doubtful they'll be removed since the space saving is negligable. Remember, english sites generally cater to english audiences. The two dvds with the hebrew subs on will be very generic 'general' release discs. Companies like Universal do this because its cheaper to release one dvd and re-encode it for different regions.
3. Distribution rights for dvds across region 2 is in the hands of lots and lots of companies. What maybe Universal in one country maybe something else in another, which means dvd discs tend to differ.
Jewish releases are probably found on one of the major israeli sites, if that's what your after, however, with Western DVDs, hewbrew subs aren't all that common, and even more so in the states which is a different DVD region to europe