That's categorically not the case - the index for the search API has always been around 7 days since Twitter acquired Summize (which is where the search API came from). There was never an artificial limitation such as the one you're describing. From the page you're linking to from the archive:
"The Search API is not complete index of all Tweets, but instead an index of recent Tweets. At the moment that index includes between 6-9 days of Tweets."
Scraping the Twitter website is against the terms of service and may result in permanent suspension of access.
"The Search API is not complete index of all Tweets, but instead an index of recent Tweets. At the moment that index includes between 6-9 days of Tweets."
Scraping the Twitter website is against the terms of service and may result in permanent suspension of access.