Is it reasonable that broadband in university campus is not allowed to use routers to surf the Internet?

I work as a network administrator at school. Let me answer this question.

I give online guidance to my younger brothers and sisters who just entered school. I have been there at night, but many freshmen disdain to listen to this kind of guidance. In the end, these people are the worst. For example, I don't know the account password; I didn't ask how to surf the Internet until the end of the semester.

In the guidance, I said that I must not use the router (the school is not installed, it is afraid of conflict). If I want to install it, I have to turn off DHCP and change it to a local area network, and it is best to turn on hotspots (because all three operators have it, there is a small probability that installing a router by myself will lead to confusion in authentication, such as a student choosing Unicom and playing telecommunications). However, a group of promoters are born to sell routers and installation, and the package of junk network cable+100 Mbps switch is 100, plus a router 200. If you know how to surf the internet, you can pat your ass and leave. If something goes wrong, throw the pot to the webmaster and let the student webmaster help them wipe their bottoms. Once in the dormitory, especially the girls' dormitory, the channel detection is intensive.

I've seen many great dorms:

1. There is a dormitory for boys. The router's WAN and LAN are plugged into the same switch, and the network speed is poor, but I am surprised that I can't blow up the network.

2. Many dormitories connect routers first, and then switches. I have also seen a girl selling dolls to a dormitory with four routers, and the LAN port of the previous one was plugged into the WAN port of the next one.

3. A girl angrily accused the school of cheating money, saying that a router+an account can access the Internet, and everyone has to accept it. Isn't this cheating money? I explained, but I didn't listen. (To be honest, I hope it's a dormitory 100M)

4. Why is the download speed not 30M/s, but 5M/s? Isn't this cheating money?

Operators are also very strange, and some students have abnormal online accounts. Asking them is just like asking uncle, and it hasn't even been solved for a semester. As soon as the financial department of the school failed to allocate funds to the operators in time, it locked the student accounts (especially the late students).

We can choose from three operators of our broken school. Each package is 30M, telecom 30M, Unicom 50M, Thunderbird 100M, and mobile 80M- 100M. The better experience of the three operators is mobile, because fewer people choose. Every year, LOL plays well, and the other two can't stand being bombed because of the school's network equipment.

In the first semester of 20 years, AP was installed in every dormitory, and the problems of these privately installed routers were much less. On the contrary, most of them are network failures caused by the school's failure to complete equipment debugging on the deadline.

As for why the router is not used, it is just to reduce the trouble, otherwise it will be a lot of trouble, just like our school does not have too many restrictions.