Am I outgolfed by Dennis?
Python 3.6 + requests + bs4 - 363 358 bytes

import bs4,re,requests
u,n=input().split("/#");i=1;d=y=float("inf")
while i:
 A=bs4.BeautifulSoup(requests.get(u+f"?page={i}").text,"html.parser")(class_="answer")
 for a in A:
  c=int(re.findall("\d+",(a("h1")+a("h2")+a("p"))[0].text)[-1])
  if "Dennis"in a(class_="user-details")[-1].text:d=min(c,d)
  if a["data-answerid"]==n:y=c
 i=A and i+1;
print(d&lt;y)


Prints True or False.

Note: does not currently work on the second link because of invalid HTML produced by this answer (the em and strong tags are terminated in the wrong order at the end of the second line, and causes the parser to miss the username block). Try it on this link instead.

Using the API - 401 380 bytes

import requests,re
q,A=re.findall("\d+",input());i=1;d=y=float("inf")
while i:
 r=requests.get(f"https://api.stackexchange.com/2.2/questions/{q}/answers?site=codegolf&amp;filter=withbody&amp;page={i}").json();i=r["has_more"]and i+1
 for a in r["items"]:
  c=int(re.search("(\d+)\D+$",a["body"]).group(1))
  if a["owner"]["user_id"]==12012:d=min(d,c)
  if a["answer_id"]==A:y=c
print(d&lt;y)


Note that this also fails on the second link, but because one answer started with This may be foul play. instead of the header...