Now that MacBook Neo has a mobile chip, does it make it more secure than others?

The chip is one thing but it still runs MacOS which will have more attack surface because it’s a desktop OS and not a more restricted mobile OS. The more “stupid” something is, the least vulnerabilities it potentially can have. Hacking a sophisticated system is easier because of all the possible angles of attack. Moreover, I’m not sure if that chip will add anything groundbreaking given that Apple’s security is already quite high, might be a small bump but nothing groundbreaking. Maybe I’m wrong but point still stands: if you want something with higher security then there are options besides MacOS (with specific high security Linux distros).