This is going to be long...
In my opinion, here is the flaw of hang your hat on 14 CFR 101: .41 states what condition, the applicability, of the rule(s) to follow. i.e. "No person may operate model aircraft so as to endanger the safety of the national airspace system." Meaning .41 describes what a model aircraft activity looks like. HR 302 Section 349 changes the look.
The world is complicated. Cannot just look to a single source, we need to gather all available information and share what we find with each other. Then let folks decided, but always do what is safe and not cause harm to others.
In the June 26, 2016 Federal Register, the FAA published 14 CFR 107 AND added 14 CFR 101.41 and .43 stating the purpose of 101.43 as ... (if you think I am long winded...)
"Because of the statutory prohibition on FAA rulemaking regarding model aircraft that meet the above criteria, the NPRM proposed that model aircraft meeting these criteria would not be subject to the provisions of part 107. However, although section 336(a) exempts certain model aircraft from FAA rulemaking, section 336(b) explicitly states that the exemption in section 336(a) does not limit the FAA's authority to pursue enforcement action against those model aircraft that “endanger the safety of the national airspace system.” The FAA proposed to codify this authority in part 101 by prohibiting a person operating a model aircraft from endangering the safety of the NAS."
and later
"Section 336 of Public Law 112-95 specifically prohibits the FAA from issuing any new rules with regard to model aircraft that satisfy the statutory criteria specified in that section. Accordingly, the FAA cannot impose additional regulations on model aircraft that meet the criteria of section 336 nor can the FAA make those aircraft subject to the provisions of part 107."
Thus, again in my opinion, as long as a model aircraft is operated foloowing the "If's" of the current law (which is now HR 302 section 349) only 14 CFR 101.43 applies.
HR 302 Section 349 is different than 336, it states:
"a person may operate a small unmanned aircraft without specific certification or operating authority from the Federal Aviation Administration if..." then lists the conditions.
As long as a non-107 certificated pilot, or a 107 pilot that just wants to have fun, follows the if's, the FAA has no control over the activity. Yes I know, the written test, the FAA is given 180 days to develop the requirement, until then, cannot be required, right?
One down side of HR 302 is it does open the door for the FAA to regulate hobby use and requires the FAA to report to Congress incidents with model aircraft. Just cannot require certification of the pilots.
Be safe and careful out there.