You literally just quoted the problematic piece of the legislation, and then simultaneously dismissed any concerns about it:
Because, unlike you, I understand it.
Do you understand that leaving the ability of a "health officer" to arbitrarily decide what constitutes a "last resort" and a "danger to public health" constitutes the removal of due process, and is unconstitutional?
I realize you do not know what you are talking about, as all the provisos are included to prevent such an occurrence. Namely:
"(2) A local health officer may invoke the powers of police officers, sheriffs, constables, and all other officers and employees of any political subdivisions within the jurisdiction of the health department to enforce immediately orders given to effectuate the purposes of this section in accordance with the provisions of RCW 43.20.050(4) and 70.05.120.
(3) If a local health officer orders the immediate involuntary detention of a person or group of persons for purposes of isolation or quarantine:
(a) The emergency detention order shall be for a period not to exceed ten days.
(b) The local health officer shall issue a written emergency detention order as soon as reasonably possible and in all cases within twelve hours of detention that shall specify the following:
(i) The identity of all persons or groups subject to isolation or quarantine;
(ii) The premises subject to isolation or quarantine;
(iii) The date and time at which isolation or quarantine commences;
(iv) The suspected communicable disease or infectious agent if known;
(v) The measures taken by the local health officer to seek voluntary compliance or the basis on which the local health officer determined that seeking voluntary compliance would create a risk of serious harm; and
(vi) The medical basis on which isolation or quarantine is justified.
(c) The local health officer shall provide copies of the written emergency detention order to the person or group of persons detained or, if the order applies to a group and it is impractical to provide individual copies, post copies in a conspicuous place in the premises where isolation or quarantine has been imposed.
(d) Along with the written order, and by the same means of distribution, the local health officer shall provide the person or group of persons detained with the following written notice:
NOTICE: You have the right to petition the superior court for release from isolation or quarantine in accordance with WAC 246-100-055. You have a right to legal counsel. If you are unable to afford legal counsel, then counsel will be appointed for you at government expense and you should request the appointment of counsel at this time. If you currently have legal counsel, then you have an opportunity to contact that counsel for assistance."
The rest of your rant is amateurish opinion,