I agree with @JackRasputen I've tried out wix, squarespace, and wordpress, and if all you want is just a basic comic site like XKCD - https://xkcd.com/ or JS power Hour - https://www.jspowerhour.com/ then wordpress is really all you need.
Wix and squarespace are better for a portfolio site or online store or businesses that might want apps like open table and rotating built-in google maps, but honestly you end up paying for a bunch of code you won't use as a comic artist.
The other big thing is with wordpress you can eventually add coding to your own site, so you can make more interesting and interactive projects for your site like XKCD or MS Paint adventures does. Wix and Squarespace allow you to put in code but only to a very minor extent, all you can really do is arrange different pre-made pieces within their sandbox.
Another thing to consider is engagement, with your own site you get to build your brand on your own terms, but you have to find the audience and then bring them to the site with advertising. The benefit of Tapas or smack jeeves or webtoon is that there is already a built-in audience who frequents the site and might stumble-upon your work, that's why comics like elf and warrior - https://www.webtoons.com/en/fantasy/elf-and-warrior/list?title_no=908 and the pigeon gazzette can be popular without having a dedicated website, you don't get to have the ad revenue until you are really making up a noticable precentage of the site's visitors, but realistically ad revenue is only like 1$ per 10,000 views at best, and you can make more money doing direct engagement with fans on patreon or through merch sales.
I currently have a website through wix - https://www.jimmycarl.com/single-post/2017/11/20/Space-Poutine-Part-1
the only 2 reasons I have this and not a collection of social media accounts to spread my work like tapas and tumblr, is to have greater control over my content and to qualify for certain writing contests and conferences that specify that a professional writer must have their own website.
