That may be true on a small scale somewhere but not in Hollywood. All scripts are screened. Those that make it through the screening process need to support agendas, of which LGBT is one. Hollywood is watched by GLAAD who issues an annual report.
"Today, GLAAD released the seventh annual Studio Responsibility Index ( SRI ), a report that maps the quantity, quality and diversity of lesbian, gay, bisexual, transgender, and queer (LGBTQ) characters in films released by the seven major motion picture studios during the 2018 calendar year. GLAAD researched films released by 20th Century Fox, Lionsgate, Paramount Pictures, Sony Pictures, Universal Pictures, Walt Disney Studios and Warner Bros., as well as films released by four subsidiaries of these major studios. The report is intended to serve as a road map toward increasing fair, accurate and inclusive LGBTQ representation in film.
“GLAAD found that of the 110 releases from major studios in 2018, 20 (18.2%) included characters that were lesbian, gay, bisexual, transgender, and/or queer (LGBTQ). This represents a significant increase from the previous year’s report (an all time low at 12.8%, 14 out of 109 films). This is also the second highest percentage of inclusive films found in the seven-year history of the report, just behind 18.4 percent of films (23 of 125) in 2016.”