Problem with searching over Beautiful Soap object

[snippsat]

Then I suppressed install staff from browser instantiation, i.e. browser = webdriver.Chrome().
This way it worked ... but Chrome browser opens. Can it be avoid ?

You can not do that,you set --headless(not loading Browser there).
The code i posted do not load Browser,it's running headless.

Returning to the blocking issue ... if I understood you correctly, the selenium approach has a kind of blocking immunity ?

Selenium automates web browsers,so do that it's act like and is a web browsers then it do net detected as other Scraping tool do.
Some site also try to block Selenium, therforew there are stuff like undetected_chromedriver

Here an other setup not using Webdriver Manager

# amazon_chrome.py
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
import time

#--| Setup
options = Options()
options.add_argument("--headless")
options.add_argument("--window-size=1920,1080")
options.add_experimental_option('excludeSwitches', ['enable-logging'])
ser = Service(r"C:\cmder\bin\chromedriver.exe")
browser = webdriver.Chrome(service=ser, options=options)
#--| Parse or automation
url = "https://www.amazon.com/Advanced-Artificial-Intelligence-Robo-Justice-Georgios-ebook/dp/B0B1H2MZKX/ref=sr_1_1?keywords=9783030982058&qid=1653563461&sr=8-1"
browser.get(url)
title = browser.find_element(By.CSS_SELECTOR, '#productTitle')
print(title.text)

Running this only get title back,it do not load Browser.

Output:
λ python amazon_chrome.py
Advanced Artificial Intelligence and Robo-Justice

Another question ... blocking problem aside, does using the BeautifulSoap approach allow us to find the title so easily by searching for "productTitle" ?

Not as long get detected and blocked by Amazon.
You should also check what Rules Amazon has for web-scraping.

Pretty much any e-commerce website tries blocking web scraping services or any automated bots accessing their content.
There are two identifiers that websites use to check whether the requests being sent to their servers
originate from a genuine internet user or an automated bot.