Yes. A mesh router is definitely better than wifi extender. The following are the 3 reasons why a mesh router is always a better choice over wifi extenders.
Wifi signal quality
Assume that you have a home where the wifi signal is weak in many areas. When a wifi extender is used, it has to be always connected to the router.
The wifi signal from the wireless router is relayed to the wifi extender. The extender would then relay the signal to the users requiring access.
When a mesh router is used, advanced technolgy is used for commuincation between the routers. The users on the network, will automatically connect to the best available mesh router.
The quality and performance of the wifi signal would be of superior performance when mesh router is used.
Wifi extension capability
If you want to extend your wifi to larger area, a wifi extender may not be a good choice. This is because, you may need multiple wifi extenders.
When multiple wifi extenders are used, the quality and performance of the wifi link would be degraded. Mesh routers would be an ideal choice if you wish to extend your wifi to a large area.
Mesh routers can be added as and when required. For example you can purchase mesh routers based on the size of the area requiring coverage. The following are two mesh router recommendation for 5500 and 7500 sqft.
The TP-Link Deco WiFi 6 Mesh System provides coverage upto 5500 sqft.
The NETGEAR Orbi Whole Home Tri-band Mesh Wi-Fi 6 System provides coverage upto 7500 sqft.
A mesh network is easier to manage than a network with wifi extender. Mesh routers can be easily managed using a mobile app which comes along with the router. This is not possible with wifi extenders.
From the above three reasons, it can be inferred that a mesh router is always better than wifi extender.
Setup up your home with multiple intrenet connection with a dual wan router TRENDnet AC3000 Tri-Band Wireless Gigabit Dual-WAN VPN SMB Router
Setup a gaming network for your home with a gaming router TP-Link AX6000 WiFi 6 Router(Archer AX6000) -802.11ax Wireless 8-Stream Gaming Router
Setup a mesh network at home with a mesh router Mesh router for 5000 sqft home – NETGEAR Orbi Whole Home Tri-band Mesh WiFi 6 System (RBK852)