10.5.2 Uses a Top 1 Mio curated version of Hagezi's Light DNS filter (halves the raw rules from well over 75K to just over 35K.
Although Chrome processes these DNR filters crazingly fast (might gain a milli second or less), it fits the design principles of uBD better.
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Someone asked why the worry-free mode? The default filters (top half of the filter block list tab) should not break websites, they are only advertising and annoyances oriented. The worry-free mode adds auto decline and additional tracking protection (lower half of filter block list tab).
Tracking protection tends to have a (slightly) higher chance of interfering with commercial websites that advertisements, because advertisements are used in the "attract" phase, when people are ready to buy, websites don´t need to show ads, so they usually don´t mind that you block advertisements (the ads did their work, you are buying anyway). But websites need tracking data to know that you used a discount. So blocking tracking could (theoretically) block you from getting a discount. This is the reason for this 2-step approach. My wife missed a flight discount this way when I had another adblocker installed on her laptop.
I first used the 100% safe principle (worry-free disabled and only enabled on user request), but
@Jan Willy convinced to add the enable worry-free at startup. Because the protections are moved to 3P Matrix, the default is now to enable worry-free at start and let people stop worry-free mode temporarily to do shopping etc. This is also the reason I apply build-in whitelists on both uBD and 3PM (when people forget to disable worry-free when doing buying/banking/booking I want to reduce the chance of things being blocked/going wrong)
As with the scriptlets (no user permission or using scriptlets which could be abused by long input parameters or processing raw javascript) I realize that I am being more papal than the pope (using advertising as default and tracking protection as optional), but I worked as freelance MarCom for AV-comparatives for some time to, so my security awareness is probably higher than average Joe AND being a marketing & sales guy myself I know how the industry works, so many filters in other adblockers are just for dressing up, they hardly offer additional privacy.
Same applies to worry-free mode's auto cookie decline and cookie-consent-clicker. The cookie consent clicker prevails over the worry-free auto decline. So when you start using uBD and first automate the cookie handling with the cookie-consent-clicker and then enable worry-free (with auto decline), you are 100% sure you won´t run into problems because cookies are declined or blocked on websites you need them to finish your purchase or transactions. Again more papal than the pope maybe on cookie blocking, but I had an transaction failed once when using cookie block lists (payment written of from bank account, but payment not received by webshop).
