when going headful with channel 'chrome' do we still need stealth plugin?

[boynet]

like for example with the puppeteer with normal user agent

this.browser = await puppeteer.launch({
            headless: false,

            ignoreHTTPSErrors: true,
            executablePath: 'C:/Program Files/Google/Chrome/Application/chrome.exe',
            channel: 'chrome',
            userDataDir: './user_data', 
            args: [
                '--no-sandbox',
                '--start-maximized',
                '--disable-web-security',
                '--disable-features=IsolateOrigins',
                '--disable-site-isolation-trials',
            ],
        });

do I still need the Stealth plugin? as it just use the normal chrome browser which is identical to normal browser so there shouldn't be any difference?
seems like I am missing something