Yes these are for the TV to bracket.
The concern is on how you gonna mount the bracket to the wall as the TV of that size n weight can rip out the feature wall or cause the chipboard hole from being an o to 0 elongated hole.

Melamine (chipboard) even for bookshelf also tend to sag over time with just books  - the degree of sagging is reduced a little with thicker melamine board.
For a 55" Sony XBR-55X950G  Weight of TV without Stand 39.7 lb (18 kg)
For a 65" Sony KD-65X7000E  Weight of TV without Stand Approx. 20.9 Kg

Problem with chipboard it can split, sag, and bend. Hence its not really a good idea to mount heavy stuff onto it.
Mounting it onto a concrete wall is the best because concrete can easily handle a load of 7kg per sleeve anchor/drop in anchor if you use M10.

A single M10 drop in anchor 3.6 kN = 367.1 kg
http://www.inkafixing.com/products/constru...rop--in-anchor/

Even if you use the lousiest shit anchor made in china I derate it 80% lah.. still can support 72kg per anchor
which is on rough BS calculation more than the 7kg per anchor you will need for the TV weight.

The chipboard or plywood should not be the loadbearing part of the mounting. It is for show only. Adapting the bracket to mount on to solid wood planks (acting like studs) is not hard. The 2x2 goes BEHIND whatever melamine board there is.

You just need one or two 2x2" hardwood at about 10 bucks each https://shopee.com.my/Cengal-Solid-Wood-Tim...9382.7661484661