At least with usenet it is possible to ignore trolls and time wasters. That is not possible on a forum such as this, and it seems unlikely it can be made possible. (For the avoidance of doubt, the "ignore member" list is grossly deficient in that respect)
Skill issue.
The SMF platform that is used to implement this forum allows to "ignore user", "ignore topic", "ignore section". For anybody for whom these SMF blocking mechanisms are not enough, there is yet another way to ignore a user: from the web browser's adblocker.
In the ublockOrigin plugin of your favorite web browser, click ublockOrigin geared wheels for "settings", and in the the "My filters" tab, specify the html syntax you want to block. For example, to never see any posts that were made by the fictive username "userBad", add these 3 lines of texts (copy/paste) in the "My filters" tab of your uBlockOrigin browser plugin:
[url=http://www.eevblog.com#]www.eevblog.com#[/url]#^div.windowbg:has(div.poster > h4 > a[title="View the profile of userBad"])
[url=http://www.eevblog.com#]www.eevblog.com#[/url]#^div.windowbg2:has(div.poster > h4 > a[title="View the profile of userBad"])
[url=http://www.eevblog.com#]www.eevblog.com#[/url]#^tr > td > a[title="View the profile of userBad"]:upward(2)
then "Apply changes". For each new username you don't want to see, you'll need to add another 3 more lines just like the ones posted above, except in each of these 3 new lines, you replace userBad with the new username.
If you need a temporary ban lift (for example to make sense of a discussions in which there are posts made by users that were made invisible from the uBlockOrigin "My filters"), you can temporary disable the uBlockOrigin and refresh the webpage (3 clicks in the uBlockOrigin), read the uncensored webpage, then another 3 clicks to enable again the adblocker.