I agree.
There is a reluctance by many to treat this tax policy with the same respect they treat the immigration laws.
Funny thing is, breaching immigration laws is not a criminal offense. You will be detained and deported.
Not paying your taxes is a criminal offense. You may be arrested, charged, fined and / or imprisoned.
Now, the chances of mass imprisonment of foreigners for not paying their taxes is slim, but one would leave themselves exposed to extortion by authorities here, and that's the whole purposes of filing, to cover your a** and not have any problems with corrupt officials.