Temperli
1 is only true if you have a crappy developer. Agree with 2. 3 can also be true, but not necessarily. In regards to Search Engine Optimization (SEO), WordPress is perfectly fine and if it's done correctly you will easily be able to change the prices and anything else on the site.
Baskin
Disagree with all three. WordPress is fine for restaurant websites and can be speedy if used right.
I don't recommend using static websites in 2020 you need to be able to change things easily and quickly.
What does he even mean by widget? Does he mean WordPress plugin? Most chat plugins are just putting JavaScript in the header of a site. Installing it manually is the same process. Although I do agree you should minimize plugins. Most chat plugins are fairly minimal though since they are not actually hosted on your site. If he is recommending against using chat software that is not self hosted, that is a whole debate to be had and not a game changer for most businesses.
Bertin
I disagree with 1,2,3 I manage a company site and use WordPress and have speed in nano seconds and 99% SEO optimized, ranked #1 on Google Search, and plugins for chat are like Baskin said most are just javascript in footer or header. I do not recumbent static sites for restaurants as content is forever updating,
Sean
#1 is flat out wrong. Like, GTFO wrong.
#2 and #3 aren't really wrong or right, they're ill informed and poorly worded.
Those things CAN slow down your site but it depends on how you implement them.
The same could be said about anything on a site.
I've built some of the fastest websites in the world, including for restaurants, and I'll tell you that these points are, at best, some low resolution thinking. If this is a developers proposal to you I recommend you pass on them. They may be ignorant of what they're talking about but it's more likely they are aware it's bad info but are more interested in selling you on what's easy for them and not what's good for you.
I'll also add that page speed isn't everything. Again, page speed is a feather in my cap but the truth is there's a ceiling to its usefulness. There are technical thresholds you want to meet for search engines and you want a good user experience but past those points it has diminished value. All you really need to have is good hosting and efficient web design. Page speed matters but only to a point.
Final thought, if you're comfortable with WP then stick to that. If a freelancer or agency wants to sell you something else, then they're not the ones for you. WP developers are only slightly less common than rocks and there's no reason you can't have a great website built for your restaurant on it.
Shane
This really depends. Imho
In the features you plan to have for your client tell.
WordPress is fine, yet many developers do not know how to build on it properly which I feel is this guys issue.
Also some features you may want like tracking deliveries the plugins do in fact slow down your site mainly because they are built clunky.
So now after I know what features you want, like online ordering sending to your current post may need customized built plugins.
If this is the case I would also suggest a static site as he is.
What this guy did is not ask you as a client what features do you want, people decide what they are going to use first which is wrong.
Why use a Content Management System (CMS) if your site wont need it or benefits from it.
People need to get back to collecting the content, designing for user experience, do keywords research, and than and only than start designing the site and components around the content and not try to paint by number in a theme.
You can find me on Upwork to discuss this more if you like or message me here.
I would need to know more before giving you an honest opinion on which you should use.

👈📰

🔗🏹